JP7395953B2 - Imaging device - Google Patents

Description

The present invention relates to an imaging device.

Patent Document 1 discloses a wearable smart device that provides danger warning information. The wearable smart device has a microphone, a camera, and a processor. The microphone is configured to detect audio data related to a potential hazard. The camera is configured to detect image data related to a potential hazard. A processor is coupled to the microphone and the camera and configured to determine whether the potential hazard presents an actual hazard based on at least one of the detected audio data or the detected image data. has been done.

Patent Document 2 discloses a spherical video shooting system. The omnidirectional video shooting system includes an acquisition means, a calculation means, and a generation means. The acquisition means acquires the inclination angle of the image sensor with respect to the vertical direction at a second cycle of "1/integer" that is shorter than the first cycle of capturing original image data from the image sensor. The calculation means calculates the average tilt angle based on the tilt angle of the image sensor with respect to the vertical direction acquired at the timing when the original image data was acquired, and the tilt angle of the image sensor with respect to the vertical direction acquired at timings before and after the original image data. The generating means generates corrected image data by correcting the original image data based on the average tilt angle.

Japanese Patent Application Publication No. 2016-186786 Japanese Patent Application Publication No. 2017-017689

However, the wearable smart device of Patent Document 1 and the omnidirectional video shooting system of Patent Document 2 cannot necessarily be said to be excellent in user-friendliness and convenience, and there is room for improvement.

The present invention has been made based on the above-mentioned awareness of the problem, and an object of the present invention is to provide a suitable imaging device.

The imaging device of the present embodiment includes: a mounting section having a pair of arms and a connecting section connecting the pair of arms; a pair of imaging sections supported by the pair of arms; an adjustment mechanism that adjusts the support position of the pair of imaging units with respect to the arm portions , and the adjustment mechanism includes at least two portions provided on each of the pair of arm portions, located on the distal end side and the intermediate side. a support protrusion; and a support hole that is selectively inserted into the at least two support protrusions provided on each of the pair of imaging units , and the support hole is inserted into the support protrusion located on the intermediate side. when the angle of the line connecting the central part of the connecting part and the pair of imaging parts is within the range of 60° to 180°, and the supporting protrusion has the supporting hole located on the tip side. When the device is inserted into the device, the angle of a line connecting the center portion of the connecting portion and the pair of imaging portions is not within a range of 60° to 180° .

According to the present invention, a suitable imaging device can be provided.

FIG. 1 is a front view of the wearable device of this embodiment. It is a rear view of the wearable device of this embodiment. It is a top view of a wearable device of this embodiment. FIG. 1 is a perspective view of the wearable device according to the present embodiment, viewed obliquely from above. FIG. 2 is a perspective view of the wearable device according to the present embodiment, viewed diagonally from below. FIG. 1 is a block diagram showing the configuration of a wearable device according to the present embodiment. FIG. 2 is a diagram showing a state in which the wearable device of the present embodiment is worn by a user. FIG. 6 is a diagram illustrating a first example in which the mounting positions of a pair of imaging units with respect to the neck mount are optimized. FIG. 7 is a diagram illustrating a second example in which the mounting positions of the pair of imaging units with respect to the neck mount are optimized. It is a figure which shows the modification of the neck mount part and the imaging part arrange|positioned here. FIG. 3 is a first diagram showing the idea of lens rotation and image coverage area. FIG. 7 is a second diagram showing the lens rotation and the improvement of the image coverage area. FIG. 7 is a third diagram illustrating the lens rotation and the improvement of the image cover area. FIG. 4 is a fourth diagram illustrating the lens rotation and the improvement of the image cover area.

1, FIG. 2, FIG. 3, FIG. 4, and FIG. 5 are a front view, a back view, a top view, a perspective view seen from an upper diagonal direction, and a lower diagonal view of a wearable device (imaging device) 1 of the present embodiment. FIG. FIG. 6 is a block diagram showing the configuration of the wearable device 1 of this embodiment. FIG. 7 is a diagram showing a state in which the wearable device 1 of this embodiment is worn by a user. Note that in FIG. 7, the appearance of the wearable device 1 worn by the user is different from FIGS. 1 to 5, but this is for convenience of drawing. FIG. 7 conceptually shows that the wearable device 1 is used by hanging it around the user's neck, and the characteristic configuration of the wearable device 1 of this embodiment is, for example, as shown in FIGS. This is expressed in FIGS. 8, 9, etc., which will be described later.

In the following description, each direction of top, bottom, front, back, left, and right is based on the arrow direction shown in the figure.

The wearable device 1 includes a neck mount portion (attachment portion) 100 that is approximately U-shaped (approximately C-shaped) along the shape of the user's neck so that it can be hung around the user's neck. The neck mount portion 100 is made of, for example, hollow natural rubber, flexible fabric, synthetic resin, leather, metal, non-metal, or a combination of at least a portion of these. A signal transmission cable (not shown) may be routed inside the neck mount section 100.

The neck mount portion 100 has a substantially U-shaped (substantially C-shaped) apex portion 101 and both arm portions 102R and 102L that sandwich this apex portion 101. Both arm portions 102R and 102L constitute a “pair of arm portions”, and the apex portion 101 constitutes a “center portion of a connecting portion” that connects both arm portions 102R and 102L (a pair of arm portions). There is. This apex portion 101 can also be defined as being located at the center of the curved portion of the approximately U-shape (approximately C-shape), that is, on the axis of symmetry (line symmetry) of the approximately U-shape (approximately C-shape). . The neck mount section 100 has a support holder 103 located on the opposite side of the generally U-shaped open side of the apex section 101 . A main body box 104 is supported by the support holder 103 . Note that the support holder 103 may be provided on at least one of the arms 102R and 102L (a pair of arms) and the vertex 101 (connection part) of the neck mount part 100.

Both arm parts 102R and 102L of the neck mount part 100 are provided with side projecting arms 105R and 105L. The lateral protruding arms 105R, 105L are components of both arm portions 102R, 102L. The side projecting arm 105R is provided with a support projection 105RF that projects forward and a support projection 105RU that projects upward. The side protruding arm 105L is provided with a support protrusion 105LF that protrudes forward and a support protrusion 105LU that protrudes upward. The support protrusions 105RU and 105LU are drawn with broken lines only in FIGS. 1 and 2. Both arm parts 102R and 102L of the neck mount part 100 are provided with support protrusions 102RF and 102LF that project forward.

A pair of imaging units 110R and 110L are supported by side protruding arms 105R and 105L of both arms 102R and 102L of the neck mount unit 100. The pair of imaging sections 110R and 110L are supported by both arm sections 102R and 102L (lateral protruding arms 105R and 105L) that sandwich the approximately U-shaped apex section 101 of the neck mount section 100. Specifically, a pair of imaging units 110R and 110L are supported by the support protrusions 105RU and 105LU of the lateral protruding arms 105R and 105L of the neck mount unit 100. The pair of imaging units 110R and 110L have support holes 110RH and 110LH, and by inserting support protrusions 105RU and 105LU into the support holes 110RH and 110LH, the pair of imaging units 110R and 110L are supported. The support holes 110RH and 110LH of the pair of imaging units 110R and 110L are drawn with broken lines only in FIGS. 1 and 2.

Here, the support holes 110RH and 110LH of the pair of imaging units 110R and 110L can be inserted into the support projections 105RF and 105LF or the support projections 102RF and 102LF in addition to the support projections 105RU and 105LU. That is, by selectively inserting the support holes 110RH and 110LH of the pair of imaging units 110R and 110L into the support protrusions 102RF and 102LF, the support protrusions 105RF and 105LF, or the support protrusions 105RU and 105LU, both arms of the neck mount unit 100 The support positions of the pair of imaging units 110R and 110L relative to the units 102R and 102L can be adjusted (an adjustment mechanism can be configured).

The adjustment mechanism for adjusting the support position of the pair of imaging units 110R and 110L with respect to both arm parts 102R and 102L of neck mount part 100 is, for example, a distal end side provided in each of both arm parts 102R and 102L of neck mount part 100. and at least two support protrusions located on the intermediate side, and a support hole that is selectively inserted into the at least two support protrusions provided on each of the pair of imaging units 110R and 110L. Further, the number of support holes provided in the pair of imaging units 110R and 110L may be one each like the above-mentioned support holes 110RH and 110LH, or two or more each.

Alternatively, as an adjustment mechanism for adjusting the support position of the pair of imaging units 110R and 110L with respect to both arm parts 102R and 102L of the neck mount part 100, the pair of imaging units 110R and 110R with respect to both arm parts 102R and 102L of the neck mount part 100 may be , 110L may be applied to the distal end or the proximal end. This slide mechanism includes, for example, a ring part formed on each of the pair of imaging parts 110R and 110L that holds both arm parts 102R and 102L of the neck mount part 100, and a ring part that restricts the sliding of the ring part at a predetermined position. It can have a stopper part.

Both arm parts 102R and 102L of the neck mount part 100 may house (incorporate) an electrical connection part (for example, a wire harness, a flexible circuit board, etc.) that is connected to the pair of imaging parts 110R and 110L.

As shown in FIGS. 3 and 4, an operation switch 111 is provided near the tip of the arm 102L of the neck mount 100 for performing various operations such as photographing and setting operations on the wearable device 1. ing.

As shown in FIG. 6, the imaging section 110R is equipped with a photographic lens 10R and an image sensor 12R, and the imaging section 110L is equipped with a photographic lens 10L and an image sensor 12L.

In this embodiment, as described below, two images taken by two sets of photographic lenses 10R, 10L and image sensors 12R, 12L are combined to form a single composite image (a spherical image). ), but in another embodiment, three or more photographed images taken by three or more sets of photographic lenses and image sensors are combined to generate a single composite image. You can also use it as

The wearable device 1 includes, in addition to photographic lenses 10R and 10L, and image sensors 12R and 12L, an image processing unit 14, a CPU (Central Processing Unit) 16, a ROM (Read Only Memory) 18, a RAM (Random Access Memory) 20, and a RAM. It includes an interface 22, a storage 24, a storage interface 26, a three-axis acceleration sensor 28, a battery 30, motors 32 and 34, and an operation switch 111.

The operation switch 111 includes various operation units necessary for the user to operate the wearable device 1, such as a power switch, a release switch, an operation dial, and an operation key. When the user presses the power switch, power is supplied from the battery 30 to each part of the wearable device 1 . The CPU 16 controls the entire wearable device 1 by accessing the ROM 18, loading a control program into the work area, and executing the loaded control program.

The photographic lens 10R and the photographic lens 10L are fisheye lenses (or wide-angle lenses) having the same optical performance, and have an angle of view (photographing range) exceeding 180 degrees.

The imaging element 12R is installed at a position where the center of the imaging surface (the center of the effective pixel area) is perpendicular to the optical axis of the photographic lens 10R, and the imaging surface is the imaging surface of the photographic lens 10R. The imaging element 12L is installed at a position where the center of the imaging surface (the center of the effective pixel area) is perpendicular to the optical axis of the photographing lens 10L, and the imaging surface is the imaging surface of the photographing lens 10L.

The pair of imaging units 110R and 110L can be rotated around a first axis perpendicular to the optical axes of the photographing lenses 10R and 10L by adjusting the rotational positions (rotational positions) of the support holes 110RH and 110LH with respect to the support protrusions 105RU and 105LU. It can be rotated in a certain roll direction.

The pair of imaging units 110R and 110L have the support holes 110RH and 110LH inserted into the support projections 102RF and 102LF or the support projections 105RF and 105LF; By adjusting the rotational position (rotational position) of the lens 110LH, it can be rotated in the yaw direction about a second axis that is perpendicular to the optical axes of the photographic lenses 10R and 10L and perpendicular to the first axis.

In this way, the pair of imaging units 110R and 110L have a roll direction that is around the first axis that is perpendicular to the optical axes of the photographic lenses 10R and 10L, and a first axis that is perpendicular to the optical axes of the photographic lenses 10R and 10L. It is rotatable in at least one of the yaw direction and the yaw direction around the orthogonal second axis. At this time, the pair of imaging units 110R and 110L are rotatable at a predetermined angular pitch.

The image sensors 12R and 12L are image sensors with the same specifications (the number of effective pixels, pixel size, etc. are the same). Illustratively, the image sensors 12R and 12L are CMOS (Complementary Metal Oxide Semiconductor) image sensors equipped with Bayer array filters, and images are formed at each pixel on the imaging surface via corresponding photographic lenses 10R and 10L, respectively. The imaged optical image is accumulated as a charge according to the amount of light. The image sensors 12R and 12L convert accumulated charges into voltages (hereinafter referred to as "image signals") using floating diffusion amplifiers. Image signals output from the image sensors 12R and 12L are input to the image processing section 14. The image sensors 12R and 12L may be CCD (Charge Coupled Device) image sensors, or may be image sensors equipped with complementary color filters. Furthermore, the image sensors 12R and 12L may be black and white image sensors in applications where night vision or favorable sensitivity is required.

The image processing unit 14 performs predetermined signal processing on image data input from the image sensors 12R and 12L. For convenience of explanation, data for one photographed image including the image signal of each pixel will be referred to as "image data." For convenience of explanation, the image data input from the image sensor 12R and processed within the image processing unit 14 will be referred to as "image data DA," and the image data input from the image sensor 12L and processed within the image processing unit 14 will be referred to as "image data DA." The data will be referred to as "image data DB".

The image processing unit 14 performs OB (Optical Black) correction processing, defective pixel correction processing, linear correction processing, shading correction processing, and region division averaging processing on the image data DA and DB, and The image data DA and DB after the dividing and averaging process are stored in the RAM 20 by the RAM interface 22.

The ROM 18 stores in advance information (addresses) of defective pixels of the image sensors 12R and 12L detected, for example, in an inspection process during manufacturing. In the defective pixel correction process, the pixel value of the defective pixel at the address stored in the ROM 18 is corrected based on a composite signal from a plurality of adjacent pixels.

The image processing unit 14 then performs white balance processing, gamma (γ) correction processing, Bayer interpolation processing, YUV conversion processing, edge enhancement processing, and color correction processing on the image data DA and DB stored in the RAM 20. , the image data DA and DB after color correction processing are stored in the RAM 20 by the RAM interface 22.

The image processing unit 14 performs a crop process on the image data DA and DB after the color correction process stored in the RAM 20, and then performs a distortion correction process and a compositing process. In the distortion correction process, distortion correction and vertical correction (tilt correction) are performed on the two image data DA and DB based on information output from the three-axis acceleration sensor 28. In the compositing process, the two image data DA and DB after the distortion correction process are combined (in other words, the two captured images captured by the image sensors 12R and 12L are joined) to create a spherical image (stereoscopic image). Image data with an angle of 4π radians is generated.

Note that the image processing unit 14 can also separately save each of the image data DA and DB as independent image data.

The image processing unit 14 compresses the spherical image data in a predetermined format such as JPEG (Joint Photographic Experts Group). The compressed spherical image data is stored in the storage 24 via the storage interface 26. The storage 24 is, for example, a microSD card.

The spherical image data may be transferred to an external device such as a PC or a smartphone via wireless communication such as Wi-Fi or Bluetooth (registered trademark). The user can view the captured spherical image on the screen of the external device. Note that the connection between the wearable device 1 and the external device is not limited to wireless, and may be wired.

Note that components other than the pair of imaging units 110R and 110L shown in FIG. 6, such as the image processing unit 14 and the CPU 16, can be components of the main body box 104. That is, image data captured by the pair of imaging units 110R and 110L can be transmitted to the image processing unit 14 and CPU 16 of the main body box 104 via wire or wireless.

The main body box 104 may be placed separately from the wearable device 1 without being supported by the support holder 103. For example, the main box 104 may be placed in a user's pocket so that it can communicate with the wearable device 1 by wire or wirelessly. For example, when the main body box 104 is equipped with a large capacity battery, the weight of the main body box 104 becomes large. Therefore, the main body box 104 may be separated from the wearable device 1 to reduce the burden of weight on the user's neck. is preferred. Further, when the wearable device 1 becomes hot, it is preferable to separate the main body box 104 from the wearable device 1 to prevent heat from being transferred to the user's neck.

By the way, the imaging device 1 of this embodiment is a wearable device that can be hung around a user's neck to obtain a spherical image (360° image) centered on the user. Therefore, when a person other than the user views the spherical image, the spherical image is treated as if the spherical image was in the same place as the user, the spherical image in place of the user, or the spherical image in place of the user. It can be perceived as a spherical image possessing the user. This makes it possible to experience the scenery and environment that the user sees as they are, so-called reliving the experience. By sharing images from your own perspective and possessing people far away with hands-free hands-free control, you can, for example, provide support for on-site workers and people with disabilities, strengthen security, pass on technology, and support education. It becomes possible to do so. Furthermore, it becomes possible to possess excellent athletes and obtain images of their actual experiences.

As a result of intensive research, the present inventors have determined that, in a wearable device 1 that is worn around the user's neck, when acquiring a spherical image centered on the user, a pair of imaging units 110R for the neck mount unit 100 is used. , found that the mounting position of the 110L is important. If the mounting positions of the pair of imaging units 110R and 110L with respect to the neck mount unit 100 are inappropriate, at least a part of the user's body (for example, shoulders, chest, neck, etc.) will get in the way and be reflected in the spherical image. As a result, it becomes difficult to obtain a suitable spherical image.

FIG. 8 is a diagram showing a first example in which the mounting positions of the pair of imaging units 110R and 110L with respect to the neck mount unit 100 are optimized.

In FIG. 8, an apex portion 101 is defined, which is a central portion of a connecting portion that connects both arm portions (a pair of arm portions) 102R and 102L of the neck mount portion 100. Furthermore, the positions of the pair of imaging units 110R and 110L are defined. In FIG. 8, the central portions of the main bodies of the pair of imaging units 110R and 110L are illustrated as “positions of the pair of imaging units 110R and 110L”. However, the "positions of the pair of imaging units 110R and 110L" may be the photographing lenses 10R and 10L of the pair of imaging units 110R and 110L or the imaging elements 12R and 12L. Furthermore, the "positions of the pair of imaging units 110R and 110L" may be the insertion parts of the support protrusions 105RU and 105LU into the support holes 110RH and 110LH, or the positions of the side protruding arms (pair of arm parts) 105R and 105L. It may be a predetermined position. In this way, there is a degree of freedom in how "the positions of the pair of imaging units 110R and 110L" are defined, and various changes in design and interpretation are possible.

In FIG. 8, the angle α of the line connecting the vertex 101 of the neck mount section 100 (the center of the connection section) and the pair of imaging sections 110R and 110L is within the range of 60° to 180° ( 60≦α≦180), and more preferably within the range of 80° to 120° (80≦α≦120). By satisfying this condition, the pair of imaging units 110R and 110L are placed above both shoulders of the user and on the left and right sides of the neck, and the user's body is not included in the spherical image, and a suitable spherical image can be obtained. can be obtained. When the angle α is less than 60° (α<60), the pair of imaging units 110R and 110L are too close to the tips of the arms 102R and 102L of the neck mount unit 100, and the user's body is captured in a spherical image. As a result, it becomes difficult to obtain a suitable spherical image. When the angle α exceeds 180° (α>180), it becomes difficult to attach the neck mount section 100 to the user (hang it around the user's neck).

FIG. 9 is a diagram showing a second example in which the mounting positions of the pair of imaging units 110R and 110L with respect to the neck mount unit 100 are optimized. The definition of "the positions of the pair of imaging units 110R and 110L" is the same as that described in FIG. 8.

In FIG. 9, a pair of imaging units 110R and 110L are arranged to face each other so as to form a common optical axis. Further, a virtual axis is defined that is parallel to the common optical axis and extends to include the apex portion 101 (the center of the connection portion) of the neck mount portion 100 at a position separated by a predetermined distance from the pair of imaging units 110R and 110L. do.

In FIG. 9, the angle β from the virtual axis to each of the pair of imaging units 110R and 110L is preferably in the range of 0° to 60° (0≦β≦60), and is in the range of 30° to 50°. More preferably, it is within (30≦β≦50). By satisfying this condition, the pair of imaging units 110R and 110L are placed above both shoulders of the user and on the left and right sides of the neck, and the user's body is not included in the spherical image, and a suitable spherical image can be obtained. can be obtained. When the angle β is less than 0° (β<0), it becomes difficult to attach the neck mount section 100 to the user (hang it around the user's neck). When the angle β exceeds 60° (β>60), the pair of imaging units 110R and 110L are too close to the tips of the arms 102R and 102L of the neck mount unit 100, and the user's body is captured in a spherical image. As a result, it becomes difficult to obtain a suitable spherical image.

FIGS. 10A and 10B are diagrams showing modified examples of the neck mount section 100 and the imaging section disposed thereon.

In FIG. 10A, the neck mount part 100 has a substantially U-shape that surrounds the user's head and neck, and includes a pair of opposing parts 120 that extend parallel to each other, and a connecting part 130 that connects the ends of the pair of opposing parts 120. have. Note that this modification does not include a substantially U-shaped (substantially C-shaped) curved portion, but instead includes a linear connecting portion 130 that connects a pair of opposing portions at right angles. Furthermore, two imaging units 140A are provided at the connecting portion between the pair of opposing portions 120 and the connecting portion 130, and two imaging portions 140B are provided at the intermediate portion of the pair of opposing portions 120. For example, it is preferable that the angle α' of the line connecting the central part of the connecting part 130 and the two imaging parts 140B is within the range of 60° to 180° (60≦α'≦180), More preferably, the angle is within the range of 80° to 120° (80≦α'≦120).

In FIG. 10B, the neck mount part 100 has a hollow ring shape that surrounds the user's head and neck, and includes a pair of opposing parts 150 extending parallel to each other, and a hollow ring connecting part ( connection portion) 160. Further, two imaging units 170A are provided at the connection portion between the pair of opposing portions 150 and the hollow ring connection portion 160, and two imaging portions 170B are provided at the intermediate portion of the pair of opposing portions 150. For example, the angle α'' of the line connecting the central part of the hollow ring connection part 160 and the two imaging units 170A or the two imaging units 170B is within the range of 60° to 180° (60≦ α”≦180) is preferable, and it is more preferable that it is within the range of 80° to 120° (80≦α”≦120).Although the hollow ring shape has a curved shape, the user's head and neck The shape may be any shape as long as it surrounds, for example, it may be a straight, substantially square shape.

Note that the present invention is not limited to the above-described embodiments, and can be implemented with various modifications. In the embodiments described above, the sizes, shapes, functions, etc. of the components illustrated in the accompanying drawings are not limited to these, and can be changed as appropriate within the scope of achieving the effects of the present invention. Other changes can be made as appropriate without departing from the scope of the invention.

For example, in the above embodiment, the wearable device 1 is described as a necklace type that is hung around the user's neck, but it can also be applied to a type that is hung on another part such as the user's head or wrist. It is.

For example, in the above embodiment, the case where the imaging device is applied to the wearable device 1 has been described as an example, but the imaging device can also be applied to various devices other than the wearable device.

In addition, when photographing processing is performed at a position where the optical axes of the pair of imaging units 110R and 110L are parallel to each other, it is possible to obtain and analyze information necessary to perform processing regarding a stereoscopic image, and to use the information. It may also be added to photographed image data.

For example, by pointing the pair of imaging units 110R and 110L toward the inner user and acquiring and analyzing facial information of the user, the user's state (e.g., psychological state such as level of joy, anger, sorrow, etc., sympathetic nervous system, etc.) It is possible to grasp the state of the parasympathetic nervous system, the state of the body such as pulse and blood pressure, the state of fatigue, etc.). Furthermore, by including the user's specific information and the surrounding situation in the captured image data, it becomes possible to use the captured image data as evidence (e.g., evidence information such as what the user did, when, where, etc.) ).

For example, by acquiring information with the pair of imaging units 110R and 110L facing forward, object detection processing (distance measurement processing) can be performed based on the information. That is, the wearable device 1 can be used as a stereo camera (distance measuring device).

Further, the optical axes of the pair of imaging units 110R and 110L may be made different from each other. For example, one of the pair of imaging units 110R and 110L may face forward and the other may face sideways.

Furthermore, instead of/in addition to focusing on the mounting positions of the pair of imaging units 110R and 110L, it is also possible to shorten the stitch distance by rotation. In other words, this is an application example of the position and rotation of the pair of imaging units 110R and 110L. FIGS. 11 to 14 are first to fourth diagrams showing the lens rotation and the improvement of the image cover area.

In FIG. 11, the wider the fisheye lens, the larger the coverage area and the closer the stitch points are. In other words, the positions where the images on both sides are stitched become closer, and the images on both sides at a short distance can be connected. The wider the angle of the lens, the larger and more expensive the lens becomes, so the angle is preferably about 185° to 230°. Increased size is fatally undesirable for wearable devices. As shown in FIG. 11, when the fisheye lenses on both sides are arranged and the angles of the image sensor surfaces are made parallel, the distance to the stitch point is A=B. In this case, it is convenient to perform 360° stitching and image the entire periphery from the front to the back at an equal distance. However, if you want to capture images from the front, focusing on the work at hand (for example, surgery, crafts, art, crafts, etc.), you may want to shorten the distance B. This is because if the distance B is long, there is a problem that the images will not be stitched.

Therefore, as shown in FIG. 12, it is conceivable to focus on the front direction and shorten the stitch distance by rotating the fisheye lenses on both sides and fixing them facing outward to take an image. In this case, the back direction will be sacrificed. This is an effective method for applications in which images are taken with emphasis on the work at hand.

Alternatively, as shown in FIG. 13, stereo imaging may be made possible by rotating and fixing the fisheye lenses on both sides toward the front. In this case, both images are not stitched. This case is suitable for stereo viewing where distance information is important. It is especially suitable for stereoscopic viewing on a head-mounted display, and when working at hand with a sense of perspective.

Alternatively, as shown in FIG. 14, if the fisheye lenses on both sides are rotated inward and fixed, the user's own face can be included in the image. In this case, it is necessary to set the lens angle of view and the distance between the lenses so that an angle of view that allows the wearer's face to be seen is obtained. Naturally, the angle of view in the front direction is narrower, but both the subject in front of you and your face are reflected in the image. It can also be used for purposes such as acquiring facial expression data of yourself and the other person, and sensing pulses from images of the face and neck surface.

1 Wearable device (imaging device)
10R 10L Photographic lens 12R 12L Image sensor 14 Image processing section 16 CPU (Central Processing Unit)
18 ROM (Read Only Memory)
20 RAM (Random Access Memory)
22 RAM interface 24 Storage 26 Storage interface 28 3-axis acceleration sensor 30 Battery 32 34 Motor 100 Neck mount part (installation part)
101 Vertex (center of connection)
102R 102L Both arms (pair of arms)
102RF 102LF Support protrusion (adjustment mechanism)
103 Support holder 104 Main box 105R 105L Laterally protruding arms (pair of arms)
105RF 105RU 105LF 105LU Support protrusion (adjustment mechanism)
110R 110L Imaging unit (pair of imaging units)
110RH 110LH Support hole (adjustment mechanism)
111 Operation switch 120 Pair of opposing parts 130 Connecting parts 140A 140B Imaging part 150 Pair of facing parts 160 Hollow ring connecting part (connecting part)
170A 170B Imaging section

Claims (9)

a mounting part having a pair of arms and a connecting part that connects the pair of arms;
a pair of imaging units supported by the pair of arms;
an adjustment mechanism that adjusts the support position of the pair of imaging units with respect to the pair of arms;
has
The adjustment mechanism includes at least two support protrusions provided on each of the pair of arm parts, located at a distal end side and an intermediate side, and the at least two support protrusions provided on each of the pair of imaging units. a support hole that is selectively inserted ;
When the support hole is inserted into the support protrusion located on the intermediate side, the angle of the line connecting the center part of the connection part and the pair of imaging parts is within a range of 60° to 180°. can be,
When the support hole is inserted into the support protrusion located on the distal end side, the angle of the line connecting the center part of the connection part and the pair of imaging parts is not within the range of 60° to 180°. ,
An imaging device characterized by: When the support hole is inserted into the support protrusion located on the intermediate side, the angle of the line connecting the center part of the connection part and the pair of imaging parts is within a range of 80° to 120°. be,
The imaging device according to claim 1, characterized in that: The pair of imaging units are arranged to face each other so as to form a common optical axis,
When the support hole is inserted into the support protrusion located on the intermediate side, the central part of the connection part is parallel to the common optical axis and is separated from the pair of imaging parts by a predetermined distance. When an imaginary axis is defined that extends to include the imaginary axis, the angle formed by the imaginary axis and a line connecting the central part of the connecting portion and one or the other of the pair of imaging units is within the range of 0° to 60°. be,
The imaging device according to claim 1 or 2, characterized in that: When the support hole is inserted into the support protrusion located on the intermediate side, the angle formed by the virtual axis and a line connecting the center part of the connection part and one or the other of the pair of imaging parts is, is within the range of 30° to 50°,
The imaging device according to claim 3, characterized in that: The pair of imaging units has at least one of a roll direction around a first axis perpendicular to its own optical axis and a yaw direction around a second axis perpendicular to its own optical axis and perpendicular to the first axis. can be rotated to one side,
The imaging device according to any one of claims 1 to 4, characterized in that: the pair of imaging units are rotatable at a predetermined angular pitch;
The imaging device according to claim 5, characterized in that: At least one of the pair of arm portions and the connection portion has a support holder that supports a main body box having a battery.
The imaging device according to any one of claims 1 to 6, characterized in that: The pair of arm portions house electrical connection portions connected to the pair of imaging portions;
The imaging device according to any one of claims 1 to 7, characterized in that: The mounting portion has a substantially U-shape,
The pair of imaging units are supported by both arms sandwiching the apex of the approximately U-shape of the mounting unit.
The imaging device according to any one of claims 1 to 8, characterized in that:

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