JP3234020B2 - Camera system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a camera system for controlling exposure when a color original image is copied onto a recording medium in a photographic printer, a copying machine or the like.

[0002]

2. Description of the Related Art Conventionally, in a photographic printing apparatus for recording a copy image of a color original image on a recording medium such as a film, image features of red, green, and blue are extracted from the color original image, and each color is copied according to the amount. Exposure is controlled.

In Japanese Patent Application Laid-Open No. 63-178222, an image feature amount is obtained by designating a part of a main image, and an appropriate exposure is determined using the image feature amount in accordance with the content of the main image. A technique for calculating the amount is disclosed.

On the other hand, in an autofocus camera,
For a main image, for example, a main subject, the shooting distance is measured by a distance measuring device built in the camera. Then, by selecting a main subject at the measured photographing distance with an appropriate density and color balance and printing the photograph, a photograph satisfying the photographer can be obtained.

Such an autofocus camera is disclosed in, for example, JP-A-3-62023, in which the position of a main subject measured by a distance measuring device on a screen is automatically detected and the position on the screen is displayed. There is disclosed a technique for recording information on a recording medium.

[0006]

However, in the technique disclosed in Japanese Patent Application Laid-Open No. 63-178222, the main image must be specified and the contents of the main image must be input.
The operation was complicated and time-consuming. in addition,
Since the main image is specified at the time of photo printing, the main image intended by the photographer is not always specified. Therefore, the proper exposure intended by the photographer may not be obtained.

The autofocus camera disclosed in Japanese Patent Application Laid-Open No. 3-62023 requires an expensive and complicated focus detection device. Therefore, there has been a problem that the cost of the entire camera is increased.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a camera system which is inexpensive and can obtain a beautiful copy image with proper density, color, etc. for a main image intended by a photographer. The purpose is to do.

[0009]

Means for Solving the Problems] That is the present invention, Ca
Centering on the first image area, which is the main image of the original
To set a larger second image area of a predetermined size.
Means for determining the first image in the second image area.
A predetermined range of brightness around the average brightness of the image area.
Means for extracting the third image area;
And printing means for controlling the amount of exposure based on the information.

[0010]

[0011]

[0012]

According to the camera system of the present invention, color
Focusing on the first image area, which is the main image of the original,
A second image area of a predetermined size larger than
You. In this set and second image area, the first
A predetermined range of brightness around the average brightness of the image area
A third image region is extracted. And this extracted
Based on the third image area, the exposure amount is determined by the printing means.
It is controlled Te.

[0013]

[0014]

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a basic configuration diagram of a camera system according to a first embodiment of the present invention. In FIG. 1, 1
Reference numeral 1 denotes a sensor processing unit CPU (hereinafter abbreviated as CPU) for controlling and calculating the entire camera. The CPU 11 includes a sensor 12 for detecting a line-of-sight direction.
A driver 13 for driving the sensor, an A / D converter (ADC) 14 for converting an analog output of the sensor 12 into a digital amount are connected, and a photometric sensor (AE sensor) 15 for exposure control, A colorimetric sensor 16 for color, a selection circuit 17, and an A / D converter 18 are connected.

The outputs of the AE sensor 15 and the colorimetric sensor 16 are passed through amplifier circuits 19 and 20, respectively, and the output of the angular velocity sensor 21 for detecting camera shake is passed through a noise reduction filter 22. Supplied to The selection circuit 17 is for selecting either the output of the amplification circuits 19 and 20 or the output of the filter 22, and the output is AD-converted by the A / D converter 18 and supplied to the CPU 11.

A magnetic recording circuit 23 is connected to the CPU 11. The magnetic head 24 connected to the magnetic recording circuit 23 is for recording data to be described later on a magnetic tape 26 as a data recording medium mounted on a film 25.

The CPU 11 also includes a liquid crystal display device 27 for superimposing and superimposing the line of sight on the finder visual field, a liquid crystal display device 28 for displaying exposure information such as a shutter speed and an aperture value, and a film sensitivity. An exposure information input device 29 for inputting exposure information such as Sv, shutter speed Tv, and aperture value Av of a lens, and an infrared LED 30 for detecting a line of sight are connected.

Further, the CPU 11 is connected to various switches such as a camera operation start switch SW1, a line-of-sight hold switch SW2, and a release switch SW3, and a shutter front curtain control magnet Mg1 and a shutter rear curtain control magnet Mg2. It is connected.

FIG. 2 is a diagram showing a configuration and an arrangement of a main part of the camera system of FIG. In FIG. 2, 31
Denotes a photographing lens, and light reflected by a half mirror 32 provided in the middle of the photographing lens 31 is guided to a colorimetric sensor 33. A main movable mirror 34 is provided behind the photographing lens 31, and the light reflected by the main movable mirror 34 passes through a mat 35, a liquid crystal display device 27, a pentaprism 36, and an eyepiece 37, and the photographer's eyes. It is led to.

[0022] Some of the light from the photographing lens 31, is reflected by the auxiliary mirror 38 via the main movable mirror 34, A
It is guided to the E sensor 1 5. Further, behind the main movable mirror 34, a shutter 39 and a film 25 are arranged.

Further, a dichroic mirror 40 is provided inside the eyepiece 37. The dichroic mirror 40 includes an infrared LED 41 for detecting the line of sight, a projection lens 42, a dichroic mirror 43, and a lens 4.
This is for detecting the line of sight of the photographer with a line-of-sight detection device including the line-of-sight 4 and the line-of-sight direction detection sensor 12. Next, the operation of the camera configured as shown in FIGS. 1 and 2 will be described with reference to the flowchart of FIG.

The photographer operates the camera operation start switch SW1.
Pressing starts the operation of the camera (step S1).
Then, the gazing point 45 is displayed on the liquid crystal display device 27 in the finder so as to overlap with the subject, as shown in FIG. 4, at a position coinciding with the line of sight (step S2). Here, the principle of gaze detection will be described with reference to FIG.

FIG. 5A shows a corneal reflection image (first Purkinje image) P when the parallel light beam L _P is incident on the eye when the eye is looking at the center (solid line), and the eye is at an angle θ. It is a figure which shows the positional relationship which the 1st Purkinje image P 'produces when looking at the direction (broken line). Assuming that the radius of curvature of the cornea is γ, the virtual image PP ′ can be located at a distance of approximately γ / 2 from the corneal surface. The movement of the eye is performed with the center C of the eyeball as the center of rotation. If the eyeball rotates by the angle θ, the center of the cornea moves from O to O ′, and the image of the parallel light beam moves laterally by the value represented by the equation (1), and comes to the position of I ′. Become.

[0026]

(Equation 1)

[0027]

(Equation 2) Here, the length between OCs represented by the relational expression of Equation 2 is approximately 6 mm
Therefore, when θ = 5 °, the change amount is about 0.5 m
m.

[0028] Now, as shown in FIG. 5 (b), when the x-coordinate of the pupil edge and x _1, x _2, = the coordinates of the center position C of the pupil x _c is _{x c (x 1 + x 2} ) /2...(2) The x coordinate of the position P of the first Purkinje image is x _p
Then, in the range where the rotation angle θ is small, the relationship of the expression (3) is established.

[0029]

(Equation 3)

Actually, x_c, X_pIs the optical system for gaze detection
(Magnification β) projected onto the sensor 125
By image processing the image as shown in (b)
X obtained_c, X_pTo x_c', X_p′
Thus, equation (4) is obtained.

[0031]

(Equation 4)

The rotation angle θ in the vertical direction can be obtained in exactly the same manner. If the θ in the x direction and the y direction are known, the center coordinates (x, y) of the field frame that matches the line of sight in the finder field can be obtained from the magnification of the finder optical system. When the center coordinates (x, y) are determined, as shown in FIG. 4, a gazing point display of a predetermined size is performed centering on this position.

When the gazing point 45 is displayed on the liquid crystal display device 27 in the finder in step S2, the CPU 11 connects the selection circuit 17 to the amplification circuit 19. The AE sensor 15 is divided into five parts as shown in FIG. 6, and is controlled by the CPU 11 so that the photometric data of each divided area is A / D-converted independently in time series. FIG. 6 also shows the AE sensor 15.
Although the viewfinder frame is drawn so that the positional relationship with the finder can be understood, the photometric sensor 15 is not actually visible in the finder. The photometric data Bv of the five areas obtained above is subjected to a desired calculation based on the line of sight at the time of release, and is used as photometric data.

As an example of a method of calculating the photometric data,
As shown in FIG. 7, when the finder is divided into a shape substantially similar to that of the AE sensor 15, the line of sight has a region N (N
Is 1 to 5), the data of the AE sensor N (N is 1 to 5) is used as the photometric data.

As another example, the line of sight of the finder is divided more finely than in the example of FIG. 7, and the weighting factors of the outputs of the photometric sensors 1 to 5 are changed according to the region of the line of sight.
There is a method of using the sum as photometric data. That photometric data Bv _{i (i} = 1~5), coefficient K _ij (i = 1~
5, when j is j = 1 to n to a corresponding) to the viewing direction, photometric data Bv _j determines the photometric data _{Bv j = ΣK ij Bv i ...} (5).

Next, the CPU 11 computes Bv + Sv = Tv + Av (6) (where Bv is the subject optical power (the above photometric data), Sv
Is a film sensitivity, Tv is a shutter speed, and Av is an aperture value. ) To calculate the shutter speed Tv (step S3).

Then, the line-of-sight direction hold switch SW2
It is checked whether or not is pressed (step S4),
If not, the process returns to step S2, and the loop of steps S2 to S4 is repeated. Step S4 above
If it is determined that the line-of-sight direction hold switch SW2 has been pressed, it is then checked whether or not the release switch SW3 has been pressed (step S5).

Here, in step S5, if the release switch SW3 has not been pressed, the flow returns to step S3, and the loop of steps S3 to S5 is repeated. in this case,
The line-of-sight direction data is not updated, and the line-of-sight direction display of the finder is held.

On the other hand, if the release switch SW3 has been pressed in step S5, the selection circuit 17 is connected to the amplification circuit 20 and the R, G, and B output signals of the colorimetric sensor 16 are sequentially subjected to A / D conversion. The data is converted and stored in a memory (not shown) of the CPU 11 (step S6). The colorimetric sensor 16
The average luminance of each of the R, G, and B colors in an area corresponding to almost the entire surface of the film is measured.

Although the means for color separation is not explicitly shown in FIGS. 1 and 2, a known dichroic mirror is used to measure light with R, G, B, and three-surface sensors, or a color film is used. Is used. Then, CPU
11 selects the output of the filter 22 by the selection circuit 17 and detects camera shake (step S7). Next, FIG.
The principle of camera shake detection will be described with reference to FIG.

In FIG. 8, the direction of the optical axis of the taking lens 31 attached to the camera body 46 is Z, and the Z axis passes through the Z axis.
The horizontal direction perpendicular to the axis is defined as the X axis, and the vertical direction perpendicular to the axis is defined as the Y axis. In addition, the rotation angle components around the respective axes are set to θ _z , θ _x , and θ _y , respectively. Angular velocity sensors 21a, 21 applied as means for detecting blur
b is for detecting the rotation angles θ _x and θ _y respectively. The rotation angle θ _x corresponds to the movement of the image on the YZ plane formed by the Y axis and the Z axis, and the rotation angle θ _y is X
This corresponds to the movement of an image on the XZ plane formed by the axis and the Z axis.

[0042] Figure 9, the camera body is a diagram showing the movement state on the Y-Z plane of the image when the blur by the rotation angle theta _x. The first lens 31a and the second lens 31b, which are the photographing lenses 31, respectively, as shown in FIG.
Move to the positions of a 'and 31b'. Then, the image 47 of the object is moved to the position of 47 'on the image plane C-D inclined angle theta _x.

Here, the first and second lenses 31a and 3a
Assuming that the focal length of 1b is f, the distance from the focal point to the subject is L, the distance from the focal point to the image position is L ', and the moving amount of the image position is Δx, the moving amount Δx of the image is It is represented by Δx = (1 + β) ² · The theta _x-f ... (7) above (7) in value f in the expression can be obtained as an imaging lens information, the value L to give β is obtained from AF (Auto Focus) information from not shown distance measuring device be able to. Further, the value theta _x can be detected by the angle sensor 21a as the shake detection unit, substantially moving amount Δx is obtained.

Similarly, the amount of movement Δy of the image on the XZ plane when the camera body 46 is deviated by the rotation angle θ _y can be obtained from the following equation. Δy = (1 + β) ² ・ Θ _y・ f… (8)

In FIG. 1, the output of the angular velocity sensor from which noise has been removed by the filter 22 is A / D converted,
While sequentially integrating the angular velocity data in the X and Y directions, time series data of the angles θ _x and θ _y are stored in a RAM (random access memory) (not shown) in the CPU 11. Next, the time series data of the moving amounts Δx and Δy of the image due to the blur are obtained by the above equations (7) and (8) and stored in the RAM. After the exposure is completed, the time series data of Δx and Δy are written on a film recording medium. Regarding how to write this data, see, for example, Japanese Patent Application No. 4-214 filed by the present applicant.
No. 13 describes this in detail.

Next, the magnet Mg1 for locking the shutter front curtain shown in FIG. 1 is energized to start exposure. The CPU 11 keeps detecting the camera shake even during the exposure. When the exposure ends,
The shutter rear curtain locking magnet Mg2 is energized to end the exposure (step S8). Next, after a predetermined time, the camera shake detection is also terminated (step S9).

When the camera shake detection is completed, the line-of-sight direction data (x, y) obtained above and the time-series data (Δ
x, Δy) is recorded on the magnetic tape 26 attached to the film 25 (steps S10, S11). Further, the color information of the subject is also recorded on the magnetic tape 26 (step S12). The recording method may be such that a bar code is written as latent image data on a film or an IC card separate from the film. Next, a printing process of the color negative film obtained above will be described with reference to FIGS.

FIG. 10 shows an embodiment of a photographic printing apparatus. In the figure, reference numeral 48 denotes a white light source. White light emitted from the white light source 48, the cyan filter 4 9 to modulate the red component of the illumination light, the magenta filter 50 adjusts the green component, and a filter group that yellow filter 51 is arranged to adjust the blue component Be guided. The filter adjustment unit 52 that adjusts these filter groups adjusts the insertion amount according to the result of the exposure amount calculation described later.

The illumination light from the white light source 48 diffused by the diffusion box 53 passes through a shutter 57 via a color negative film 54, a lens 55, and a half mirror 56, and is wound around a take-up reel 58 and a supply reel 59. Is guided to the color photographic paper 60. The shutter control circuit 61 controls an exposure time of the shutter 57 according to a result of an exposure amount calculation described later. At the time of photographic printing, the color negative film 54 is pressed from above by the mask 62.

The line-of-sight direction and blur data recorded on the magnetic tape on the film surface are detected by the magnetic head 63. Then, the detected line-of-sight direction and blur data are amplified by the amplifier circuit 64 and then stored in a memory (not shown) in the CPU 66 via the I / O port 65.

On the other hand, the light reflected by the half mirror 56 is imaged on the color area sensor 68 by the lens 67 and is converted into an electric signal.
A / D conversion is performed at 9. In the process circuit 70,
Variation in sensitivity of color area sensor 68, white light source 48
Correction, which is a correction of distortion due to the unevenness in the amount of light, is performed.
The digital signal processed by the process circuit 70 is stored in the image memory 71. The data in the image memory 71 is used by the CPU 66 via the I / O port 65 for calculation for controlling the amount of exposure to be described later.

When the printing of one frame of the negative image is completed, the exposed portion is wound on the take-up reel 58, and the unexposed portion is pulled out from the supply reel 59 at the same time. Further, the negative carrier 73 is moved by one frame by the negative carrier moving device 72. Next, the calculation of the exposure amount control by the CPU 66 will be described with reference to the flowchart of FIG.

First, the CPU 66, via the magnetic head 63, reads the first image of the main image based on the read line-of-sight direction data.
Determine the image area. For example, as shown in FIG. 12, a predetermined radius γ ₁ is set around the line of sight P (x, y).
Is determined as the first image area 75 (step S2).
1). Then, an average luminance Bv ₁ of the first image area 75 (step S22). Then, the second image area is determined. For example, as shown in FIG. 12, the second image is formed within a circle having a predetermined radius γ ₂ (γ ₂ > γ ₁ ) wider than the first image area 75 centered on the line of sight P (x, y). Area 76
Is determined (step S23).

Subsequently, when the brightness of each pixel in the third image area is Bv ₂ , the relationship of the expression (9) is satisfied.
A third image area which is an aggregate of all pixels is obtained (step S24).

[0055]

(Equation 5) Then, an average luminance Bv ₃ of the third image region (step S25).

[0056] Thus, the color correction based on the Bv _3, color filters control, and by performing exposure control, even if there is abnormally high luminance subject in the vicinity of the main object, is properly the brightness of the main subject Exposure is controlled (Step S2
6, S27, S28). Next, a method of color correction will be described.

[0057] from the image memory 71 of FIG. 10, from the sensor output data of the area equivalent to the image area of the film surface covered by the color sensor 16 measuring of FIG. 1, the average luminance Bv _r about 3 primary colors of a subject, Bv _g, Bv Predict _b . This is obtained from the average value of each color component of the image data in the image memory 71 in FIG.

Next, these data and the average luminances Bv _or , Bv _og , of the respective color components of the subject read from the magnetic tape,
From Bv _ob , the correction value of each color component is obtained by equation (10). _{ΔBv i = Bv i -Bv oi i} = r, g, b ... (10) Thus, the correction amount of insertion force of the respective color filters 49 to 51 in FIG. _{10 C i (i = r,} g, b) is C _i = K _i ΔBv _i K _i can be determined by the coefficient (11). Thus, for the main subject,
Appropriate density reproduction can be performed, and prints with excellent color balance as a whole can be automatically obtained at high speed. The apparatus of FIG. 10 described above is applied to an apparatus for printing on color photographic paper. Next, an embodiment of the digital hard copy of FIG. 13 will be described.

In FIG. 13, white light emitted from a white light source 77 is diffused by a diffusion plate 78 and is irradiated on a color negative film 79. The transmitted light from the color negative film 79 is transmitted by the lens 80 to the color line sensor 8.
1 is imaged. The signal of the color line sensor 81 is A
It is converted into a digital quantity by the / D converter 82 and I / D
The image data is stored as image data in the memory 85 by the image processing device 84 via the O port 83. The image processing device 84 is further connected with a keyboard 86 and a printer 87 as input / output devices.

The sensor scanning device 88 scans the color line sensor 81 in one-dimensional direction to obtain one frame of image data. On the other hand, by the magnetic head 89,
Gaze direction data, camera shake data, and subject color data are detected. Each of the data detected here is supplied to the amplifying circuit 90.
And is stored in the memory of the image processing device 84 via the I / O port 83. Next, the processing content of the image processing apparatus will be described with reference to the flowchart in FIG.

First, shading correction is performed (step S31). In this case, distortion due to sensor sensitivity variation and light amount unevenness of the light source is corrected. Next, the first area of the main image is determined based on the line-of-sight direction data (Step S).
32), calculate the average brightness of the first area (Step S)
33). The method of determining the first region is exactly the same as that described with reference to FIG.

Next, a second image area larger than the first area is determined (step S34). The method of determining the second image area is the same as that in FIG. Continued,
A third image area is determined from the second image area in the same manner as in FIG. 11 (step S35), and the print density is calculated based on the average brightness of the third image (step S36).
Thereafter, color correction is performed (step S37). Here, the color correction will be described.

[0063] from the memory 85 of FIG. 13, from the sensor output data of the area equivalent to the image area of the film surface covered by the colorimetric sensor 16 1, the average luminance Bv _r about 3 primary colors of a subject, Bv _g, Bv _b Is calculated. this is,
It is determined from the average value of each color component of the image data in the memory 85. Next, the average luminance Bv _or of the color components of an object read from these data and the magnetic tape, Bv _og, and a Bv _ob, a correction factor Q _i of each color component _{Q i = Bv oi / Bv i} i = r, g, b (12) Then, the corrected luminance Bv _oj of the luminance Bv _j of an arbitrary pixel (j) constituting the image can be obtained by _Bvoj = Q _i · BV _j (13).

After the color correction is performed, the blurred image is restored based on the blurred data (step S3).
8). The specific means of camera shake correction is described in detail in Japanese Patent Application No. 4-302266 filed by the present applicant, and will not be described here.

Next, the reflectance is calculated by a gamma correction unit (not shown).
The voltage linear signal (BGR) is converted into a density-voltage linear signal (Y
MC) (step S39), the blur component in the three-color signal is separated (under color removal: referred to as UCR) to generate a black signal (step S40). Subsequently, color correction masking is performed using a predetermined masking equation (step S41).

After performing tone correction such as contrast correction (step S42), sharpness correction such as edge enhancement and smoothing is performed (step S43). Here, the image quality signal subjected to the digital signal processing is subjected to a binarization process, sent to the printer 87 and printed (step S44).

FIGS. 15 to 18 show an example in which the input of the main subject is performed by a transparent touch panel instead of the visual line input. Note that the functions of the same reference numerals are exactly the same as those described with reference to FIG.
Here, the description is omitted. FIG. 15 is a schematic configuration diagram of a main part of a camera system using a transparent touch panel.

The light passing through the taking lens 31 is reflected by the half mirror 32 and guided to the colorimetric sensor 33.
The light transmitted through the half mirror 32 is
4, passes through the mat 35 and the condenser lens 102, is reflected by the mirror 103, and is guided to the reduction optical system 104. Then, the same image as the image formed on the film surface is formed on the area sensor 91 by the reduction optical system 104. Part of the light incident on the main movable mirror 34 is reflected by the auxiliary mirror 38 and guided to the AE sensor 15 for photometry.

On the other hand, the photoelectric output of the area sensor 91 is displayed on a display unit 94 in a display operation unit 93 via a known signal processing circuit 92. Although not shown, a transparent touch panel switch described later is provided on the display unit 94.

FIG. 16 is a basic configuration diagram of an electronic circuit of the camera system of FIG. The parts having the same reference numerals as those of the components in FIG. 1 have exactly the same functions as those in FIG. 1, and thus the description thereof will be omitted here. In particular, the input part of the main subject area of the transparent touch panel will be mainly described. I do.

The electric signals of the subject image similar to the film surface are processed by a known signal processing circuit 92, and the subject image is displayed on a liquid crystal display unit 94. On the liquid crystal display unit 94,
The transparent touch panel switches 95 are provided in an overlapping manner. Next, the transparent touch panel will be described with reference to FIGS.

The transparent touch panel switch 95 and the liquid crystal display unit 94 are configured as shown in FIG. The name or position of the switch is printed on a graphic sheet 96 serving as an operation surface of the transparent touch panel switch 95. Under the graphic sheet 96, a transparent upper electrode 97 and a lower electrode 98 are arranged via a spacer 99.

An electrode X and a lower electrode 98 integrated with the upper electrode 97 at a position where the spacer 99 does not exist.
And an integrated electrode Y are provided so as to face each other so as not to come into contact with each other. The electrode X and the electrode Y constitute one main subject selection switch (95a) of the transparent touch panel switch 95. By pressing the graphic sheet 96 corresponding to the positions of the electrodes X and Y with the finger of the photographer or a pen or the like, the electrodes X and Y are pressed.
And the switch is turned on. The lower electrode 98 of the transparent touch panel switch 95 is
Is adhered on the display screen of the liquid crystal display section 94.

As shown in FIG. 18A, the transparent touch panel switch 95 (main subject selection switch 95a) has a plurality of electrodes X each having a line X ₁ ,
X ₂ and X _3, and a plurality of electrodes Y are also connected to the lines Y ₁ , Y ₂ and Y ₃ , respectively, so that a plurality of switches are arranged in a matrix crossing each other.

Now, in the transparent touch panel switches 95 arranged in a matrix, the lines X ₁ ,
It is assumed that a repetitive pulse as shown in FIG. 18B is sequentially transmitted from X ₂ , X ₃ and the CPU 11.
Then, depending on which main subject selection switch 95a of the transparent touch panel switch 95 is turned on,
Any _{one of} the lines Y ₁ , Y ₂ , and Y _{3 has} the line X
_1, X _2, or any of the pulses of the line of X ₃ is output is determined.

For example, as shown in FIG.
Main subject selection switch 95a at the intersection of (X ₂ , Y ₂ )
There assuming that are on, as shown in FIG. (B), the pulse of the line Y ₂ in the line X ₂ is detected.
Thus, the pulses detected on the lines Y ₁ , Y ₂ and Y ₃ are read by the CPU 11.

In the state shown in FIGS. 18A and 18B, the CPU 11 reads that the main subject selection switch 95a at the position (X ₂ , Y ₂ ) of the transparent touch panel switch 95 is on. Can be

When exposure is completed based on the basic configuration shown in FIG. 16 in the same manner as in the camera system shown in FIG. 1, the position (X, Y) ((X, Y) ( This corresponds to the direction of the line of sight in the camera system of FIG. 1), the amount of camera shake, and the color information of the subject. Based on this information, the photographic printing apparatus shown in FIG. 10 or FIG.
With the printer device shown in FIG. 3, a clear print can be obtained.

[0079]

[0080]

As described above , according to the present invention, an image area having a predetermined range of brightness is extracted around the average brightness of the image area which is the main image of the color original image, and the exposure amount is controlled. Since a deteriorated image such as a blur is repaired, it is not necessary to provide an expensive autofocus device or the like on the camera side, so that a camera system which can obtain inexpensive and clear prints can be provided.

Further, according to the present invention, the vicinity of the main image
Even if there is an abnormally bright object, the brightness of the main image
It is possible to provide a camera system whose exposure is appropriately controlled .

[Brief description of the drawings]

FIG. 1 is a basic configuration diagram of a camera system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing a configuration and an arrangement of a main part of the camera system of FIG. 1;

FIG. 3 is a flowchart illustrating an operation of the camera configured as shown in FIGS. 1 and 2;

FIG. 4 is a diagram illustrating an example of a liquid crystal display device in which a gazing point is displayed at a position overlapping a subject in a finder and coinciding with a line of sight.

FIG. 5 is a diagram illustrating the principle of gaze detection.

FIG. 6 is a diagram showing a positional relationship between an AE sensor and a finder.

FIG. 7 shows a viewfinder A as an example of calculation of photometric data.
It is the figure which showed the example divided | segmented substantially similar to the E sensor.

FIG. 8 is a diagram illustrating a relationship between a camera body and X, Y, and Z axes.

[9] The camera body is a diagram showing the movement state on the Y-Z plane of the image when the blur by the rotation angle theta _x.

FIG. 10 is a block diagram illustrating a configuration of a photo printing apparatus.

11 is a flowchart illustrating a calculation of exposure amount control by the CPU in FIG. 10;

FIG. 12 is a view direction P (x, y), a first image area, and a second image area;
FIG. 3 is a diagram illustrating an image area.

FIG. 13 is a block diagram illustrating a configuration of a digital hard copy.

FIG. 14 is a flowchart illustrating processing performed by the image processing apparatus of FIG. 13;

FIG. 15 is a schematic configuration diagram of a main part of a camera system using a transparent touch panel switch.

16 is a basic configuration diagram of an electronic circuit of the camera system in FIG.

FIG. 17 is a cross-sectional view illustrating a configuration of a transparent touch panel switch and a display unit.

18A is a wiring diagram showing a configuration of a transparent touch panel switch (main subject selection switch), and FIG. 18B is a timing chart of a repetitive pulse sent to the transparent touch panel switch of FIG.

[Explanation of symbols]

11: Sensor processing unit CPU (CP
U), 12: gaze direction detection sensor, 13: driver, 1
4: A / D converter (ADC), 15: photometric sensor (AE sensor), 16: colorimetric sensor, 17: selection circuit,
18 A / D converter, 19, 20 Amplifying circuit, 21
... Angular velocity sensor, 22 ... Filter, 23 ... Magnetic recording circuit, 24 ... Magnetic head, 25 ... Film, 26 ... Magnetic tape, 27, 28 ... Liquid crystal display device, 29 ... Exposure information input device, 30, 41 ... Infrared LED , 31 ... photographic lens, 3
2 Half mirror, 33 Color sensor, 34 Main movable mirror, 35 Mat, 36 Penta prism, 3
7 eyepiece lens, 38 auxiliary mirror, 39 shutter
Reference numerals 40, 43: dichroic mirror, 42: projection lens, 44: lens, SW1: operation start switch, SW2
... Gaze direction hold switch, SW3 ... Release switch, Mg1 ... Magnet for controlling the shutter front curtain, Mg2 ...
Magnet for controlling the shutter rear curtain.

Claims (1)

(57) [Claims] 1. A second image having a predetermined size larger than a first image area which is a main image of a color original image.
Means for setting an image area of; and means for extracting a third image area having a predetermined range of brightness around the average brightness of the first image area in the second image area; A printing unit for controlling an exposure amount based on the third image area.