JP3316767B2 - Image processing system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing system, and more particularly, to an image processing system capable of handling a plurality of target images as one composite image. In particular, it is useful for multimedia systems.

[0002]

2. Description of the Related Art FIG. 11 is a block diagram of a conventional CD-ROM production system 501. The CD-ROM production system 501 includes an instruction input device 12
, Image scanner 13, external storage device 140,
The CD-ROM writer 15 and the display 17 are connected, and the CD-ROM writer 15 is connected to an audio input device 80. The processing device 110 includes an image memory 18W and a color map 119.
And a color number map 120.

Next, the operation will be described. First, only one animation cell image is read from the image scanner 13 and stored in the image memory 18W. Image memory 18W
Is (the number of pixels x in the horizontal direction of the screen) as shown in FIG.
The memory has a storage capacity of × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing a pixel value) as one unit. Here, since the number of bits z of the pixel value is 8, the output of the image scanner 13 is converted into 256 colors from “0” to “255” by the color number map 120. The image stored in the image memory 18W is displayed on the display 17. At this time, the color numbers are converted into display colors by a color map 119 as shown in FIG. If the display on the display 17 is satisfactory, the image in the image memory 18W is stored in the external storage device 140. After performing the above processing for all the cell images of the animation, the images stored in the external storage device 140 are read out in chronological order and output to the CD-ROM writer 15. C
The D-ROM writer 15 writes an image on a CD-ROM. Further, the voice input through the voice input device 80 is written to the CD-ROM.

FIG. 14 is a configuration diagram of a conventional multimedia system 502. This multimedia system 5
02, the instruction input device 12 and the CD
-It is basically configured by connecting the ROM drive 16, the external storage device 140, and the display 17, and connecting the amplifier 23 and the speaker 24 to the CD-ROM drive 16. The processing device 110 has an image memory 18R and a color map 119.

Next, the operation will be described. First, CD-RO
All the images of the animation are read from M16 and stored in the external storage device 140. Next, the external storage device 14
The first image is extracted from 0 and stored in the image memory 18R. The image memory 18R includes, as shown in FIG.
The memory has a storage capacity of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing a pixel value) as one unit. Here, the image has the color number “0”
Since there are 256 colors from to 255, the number of bits z of the pixel value is 8. The image stored in the image memory 18R is displayed on the display 17. At this time, the color number is determined by a color map 119 as shown in FIG.
Convert to display color. While outputting sound from the CD-ROM drive 16 via the amplifier 23 and the speaker 24, another image is extracted from the external storage device 140 and the above processing is performed. Thereby, voice and animation can be provided simultaneously.

[0006] Other related prior arts include, for example,
It is disclosed in JP-A-3-74769.

[0007]

SUMMARY OF THE INVENTION The above conventional CD-RO
M production system 501 and multimedia system 502
The data amount of one image is (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing the pixel value). x and y are determined by the size of the screen, and z is determined by the number of colors of the image. For example, x
= 480, y = 400, z = 8. However, for example, when handling a monochrome image having a pixel value of 1 bit or a 4-color image having a pixel value of 2 bits, there is a problem that most of the data amount of one image is wasted. In the conventional CD-ROM production system 501 and the multimedia system 502, the storage capacity of the image memories 18W and 18R is determined in units of the data amount of one image. However, this means that the image memories 18W and 18R can process only one image at a time, and thus there is a problem that the processing speed is a bottleneck.

Accordingly, a first object of the present invention is to provide a system in which the data amount of one image is determined corresponding to multiple colors, and when a monochrome image or a four-color image is handled, unnecessary data is used. It is an object of the present invention to provide an image processing system capable of eliminating parts. Further, a second object of the present invention is to provide a system in which the storage capacity of an image memory is determined in units of the data amount of one multicolor image, and perform processing when handling a monochrome image or a four-color image. An object of the present invention is to provide an image processing system capable of increasing the speed.

In a first aspect, the present invention uses a storage capacity of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing a pixel value) as a unit. (The number of pixels x in the horizontal direction of the screen) × (the number y of pixels in the vertical direction of the screen) × (the number n of bits representing pixel values: m
= Z / n is an integer of 2 or more), and target image input means for inputting a target image of m) and n bits representing the pixel value of a pixel at the same position of the m target images are connected to form z bits,
A composite image of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing the pixel value) is created, and the composite image is stored in the image memory. Image combining means, and the image combining means,
(A) Of the z bits representing the pixel value of the image memory,
Clear the nth bit from the 1st bit, and (b) the first pair
N bits representing the pixel value of the elephant image and the pixel value of the image memory
From the first bit to the n-th bit of the z bits
Of the z bits representing the pixel values of the image memory
The first to n-th bits are stored in (c) image
Each bit of the z bits representing the pixel value of the memory is
Shift by n bits in the direction of
The first to n-th bits of the z bits representing the prime value
(0) is stored in (g), and (d) two of (b) and (c) above
Similarly, from the target image of the eye to the (m-1) th target image
(E) Repeating (b) above for the m-th target image
And an image processing system characterized by performing the same. In the above configuration, the bit representing the pixel value
The number of bits representing the pixel value in the first image memory of number z
Combines the second image memory of w to represent pixel values
An image memory having a bit number of (z + w),
The composite image is stored in the image memory of
Stores an image with w representing the pixel value in memory
An image processing system is provided.

In a second aspect, the present invention provides a storage capacity of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing a pixel value). (The number of pixels x in the horizontal direction of the screen) × (the number y of pixels in the vertical direction of the screen) × (the number n of bits representing pixel values: m
= Z / n is an integer equal to or greater than 2) for m target images, n bits representing the pixel value of the pixel at the same position are connected to form z bits, and (the number of pixels x in the horizontal direction of the screen) ×
A composite image of (the number y of pixels in the vertical direction of the screen) × (the number of bits z representing the pixel value) is read from an information recording medium such as a CD-ROM or a transmission path, and the composite image is read as described above. Composite image input means for storing in an image memory;
M display map means for dividing z bits representing the pixel value of the composite image stored in the image memory into m pieces each of n bits, and converting each n bit value into a display value; A display map switching means for switching and selecting one of the map means according to time, and an image display means for displaying an image using a display value of the selected display map means , wherein the number of bits representing a pixel value is provided. Is the first drawing of z
A second image in which the number of bits representing the pixel value is w in the image memory
By merging the memories, the number of bits representing the pixel value becomes (z +
w), and the first image memory includes:
A composite image is stored, and a pixel value is stored in the second image memory.
And an image processing system for storing an image having the number of bits w .

[0011]

In the image processing system according to the first aspect,
Each of n bits representing the pixel value of the pixel at the same position in the m target images is connected to form z bits, and a composite image in which the number of bits representing the pixel value is z is created. Then, the composite image is stored in an image memory having a bit number z representing a pixel value. Therefore, even if the number of bits z representing a pixel value is determined for multiple colors, the number of bits z can be used effectively, and no useless portion is generated. As a result, the apparent number of images on the CD-ROM or on the line is reduced to 1 / m, so that the time for writing to and reading from the CD-ROM can be reduced. Further, the transmission time through the line can be reduced.

In the image processing system according to the second aspect, a composite image in which n bits each representing a pixel value of a pixel at the same position of m target images are connected to form z bits is obtained by:
The number of bits representing the pixel value is stored in the image memory of z.
Then, by switching the display map means, the number of bits z representing the pixel value is taken out n bits at a time, and the value of each n bits is sequentially converted to a display value, imaged and displayed. Therefore, if one composite image is loaded into the image memory,
Since m target images can be displayed continuously, the processing can be speeded up.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. Note that the present invention is not limited to this. First Embodiment FIG. 1 is a configuration diagram of a CD-ROM production system 1 according to a first embodiment of the present invention. The CD-ROM production system 1 includes an instruction input device 12, an image scanner 13, an external storage device 14, a CD-ROM
The writer 15 and the display 17 are connected, and the audio input device 80 is connected to the CD-ROM writer 15, so that it is basically configured. The processing device 11
An image memory 18W, a color map 119, a color number map 120, and eight partial color maps 19-1 to 19-19
−m and a time management table 20. next,
The operation will be described. (A) Operation when the target image is multicolored The operation in this case is the same as that of the above-described conventional CD-ROM production system 501 (FIG. 11). First, only one animation cell image is read from the image scanner 13 and stored in the image memory 18W. As shown in FIG. 12, the image memory 18W has a storage capacity of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing the pixel value) as one unit. Memory. Here, since the number of bits of the pixel value is z = 8, the output of the image scanner 13 is converted into 256 colors from color numbers “0” to “255” by the color number map 120. The image stored in the image memory 18W is displayed on the display 17. At this time, the color numbers are converted into display colors by a color map 119 as shown in FIG. If the display on the display 17 is satisfactory, the image in the image memory 18W is stored in the external storage device 140. After performing the above processing for all the cell images of the animation, the images stored in the external storage device 140 are read out in chronological order and output to the CD-ROM writer 15. C
The D-ROM writer 15 writes an image on a CD-ROM. Further, the voice input through the voice input device 80 is written to the CD-ROM.

(B) Operation when the target image is black and white The operation in this case is shown in the flowchart of FIG. In step ST1, the image memory 18W is cleared. In Step ST2, Steps ST3 to ST5 are repeated by (number of bits z representing a pixel value in image memory 18W) ÷ (number of bits n representing a pixel value in a monochrome image) = m times. Here, since z = 8 and n = 1, steps ST3 to ST5 are repeated only m = 8 times.

In step ST3, each of the eight bits representing the pixel value of the image memory 18W is shifted by one bit in the eighth bit direction. “0” is put in the first bit, and the original data of the eighth bit is discarded. Step ST4
Then, only one cell image of the animation is read from the image scanner 13. Here, the image scanner 13
According to the setting of (1) or the pre-processing of the processing device 11, the data of the target image is made to have the same configuration as the image memory 18W as shown in FIG. That is, the number of bits representing the pixel value is z, valid data is put in the first bit to the n-th bit, and "0" is put in the other bits. In the case of a monochrome image, only the first bit contains valid data, and the second to eighth bits are set to "0". In step ST5, the image memory 18W is ORed with the target image, and the result is stored in the image memory 18W. In the case of the first target image, all the data in the image memory 18W is “0”, so this operation simply results in putting the first target image into the image memory 18W. In the case of the second to eighth target images, the first bit data of the image memory 18W is “0”, and the second to eighth bit data is the data of the previous target image or “0”. Therefore, this operation results in the data of the current target image being stacked on the data of the previous target image.

When the above steps ST3 to ST5 are repeated only eight times, as shown in FIG.
The result obtained by stacking eight monochrome images in the z direction is obtained.
This is a single composite image of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing a pixel value).

In step ST6, a test display is performed.
That is, the user gives an instruction from the instruction input device 12.
And any one of the partial color maps 19-1 to 19-m.
Choose one. As shown in FIG.
9-1 is the color number of the image stored in the image memory 18W
If the 8th bit of “0” is “0”, the display color is independent of other bits
Is black, and if the eighth bit of the color number is "1", the other bits
The display color is set to white regardless of. Also,Like 19-1
As shown in FIG.The partial color map 19-2 has a color number
If the 7th bit of the signal is "0", it is displayed regardless of other bits
Change the color to black, and if the seventh bit of the color number is “1”,
Set the display color to white regardless of the default. Also,19-1 and
As shown in FIG. 6 similarly to 19-2,Partial color map
19-3If the sixth bit of the color number is "0",
The display color is black regardless of the color, and the sixth bit of the color number is
If "1", the display color is set to white regardless of the other bits. Ma
WasAlthough not shown in FIG.Partial color map 19-4
Is related to other bits if the fifth bit of the color number is "0"
And the display color is black, and the fifth bit of the color number is "1"
Set the display color to white regardless of other bits. Also,In FIG.
Does not indicate,Partial color map 19-5Is the color number
If the 4th bit is “0”, the display color will be independent of the other bits.
Black, and if the fourth bit of the color number is "1",
Regardless of the display color, it is set to white. Also,Not shown in FIG.
But,Partial color map 19-6Is the third bit of the color number
Is “0”, the display color is set to black regardless of the other bits.
If the third bit of the number is "1", the table is displayed regardless of the other bits.
Change the color to white. Also,Although not shown in FIG.Partial empty
-Map 19-7If the second bit of the color number is "0"
The display color is set to black regardless of the other bits, and the second
If the bit is “1”, the display color is set to white regardless of other bits.
You. Also,As shown in FIG.Partial color map 19-
m is related to other bits if the first bit of the color number is “0”.
Regardless, the display color is set to black, and the first bit of the color number is “1”.
The display color is set to white regardless of the other bits. As a result,
If the partial color map 19-1 is selected, eight monochrome images
The first black and white image of the image (the first black and white image from the bottom in FIG. 5)
Image) is displayed on the display 17. In addition, partial power
If you select color map 19-2, ..., 19-m, 8
The second, eighth, and eighth black and white images of the black and white image
5 from the bottom, the 8th monochrome image from the bottom)
Displayed on spray 17. The display on the display 17
If satisfied, the process proceeds to step ST7.

In step ST7, the composite image in the image memory 18W is stored in the external storage device 14 together with its ID. Here, the IDs are represented by # 1,. The above processing is repeated for all cell strokes of the animation. Assuming that the number of all cell strokes in the animation is F, the external storage device 14 stores F / m = e composite images. Here, since m = 8, the original number is 1/8.
Will be compressed.

Next, the composite image stored in the external storage device 14 is read out and previewed. FIG. 7 is a flowchart showing the preview operation. In step SU1, the time management table 20 is set. Time management table 20
Are the times T0, T1,... For selecting and reading the composite image and the time t00 for selecting and switching the partial color maps 19-1 to 19-m for one composite image as shown in FIG. , T01,... Are defined. Each time can be arbitrarily set by the user. In the normal setting, the selection time of the composite image is made to coincide with the selection time of the partial color map 19-1, and each time obtained by equally dividing the selection interval of the composite image by 8 (= m) is used as the partial color map 19-2,. , 19-m.

In step SU2, the time management table 2
Steps SU3 and SU4 are repeated according to 0. In step SU3, the ID corresponding to each time T0, T1,.
From the external storage device 14 to the image memory 1
Load 8W. At step SU4, the times t00, t
01,... Corresponding partial color maps 19-1,.
Select 19-m. As described above, a monochrome image is continuously displayed. In the normal setting, black and white images are displayed continuously at equal time intervals in the order of reading.

When the preview is completed, the composite image stored in the external storage device 14 is read out according to a user's instruction, and C
Output to the D-ROM writer 15. The CD-ROM writer 15 writes the composite image on a CD-ROM. Also, the audio input through the audio input device 80 is converted to a CD-R
Write to OM. As described above, since the number of original black-and-white images is reduced to 1 / m, the writing time of the composite image is simply reduced to 1 / m.

Second Embodiment FIG. 9 is a configuration diagram of a multimedia system 2 according to a second embodiment of the present invention. This multimedia system 2
Is an instruction input device 12 and a CD-RO
The M drive 16, the external storage device 14, and the display 17 are connected, and the CD-ROM drive 16
, An amplifier 23 and a speaker 24 are connected to each other. The processing device 11 includes an image memory 18R
, Color map 119, and eight partial color maps 1
9-1 to 19-m and a time management table 20.

Next, the operation will be described. (A) Operation when Multicolor Image is Written to CD-ROM The operation in this case is the same as that of the above-described conventional multimedia system 502 (FIG. 14). First, CD-
All multicolor images of the animation are read from the ROM 16 and stored in the external storage device 140. Next, the first multicolor image is extracted from the external storage device 140 and stored in the image memory 18R. As shown in FIG. 15, the image memory 18R has a storage capacity of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing the pixel value) as one unit. Memory. Here, since the image is 256 colors from color numbers “0” to “255”,
The number of bits z of the pixel value is 8. This image memory 18R
Is displayed on the display 17. At this time, the color numbers are stored in the color map 11 as shown in FIG.
9 to convert to display colors. CD-ROM drive 1
While outputting sound from the amplifier 6 through the amplifier 23 and the speaker 24, another image is extracted from the external storage device 140 and the above processing is performed. As a result, voice and animation are provided simultaneously.

(B) Operation when Composite Image is Written on CD-ROM The operation in this case is shown in the flowchart of FIG. In step SR1, all the composite images of the animation are read from the CD-ROM 16, and are read from the external storage device 140.
To accumulate. Since the number of composite images is 1 / m (= 1/8) of the number of original black-and-white images, the reading time of composite images is simply reduced to 1 / m. Step S
In R2, the time management table 20 (FIG. 8) is set.
This operation is the same as step SU1 described above. If the data of the time management table 20 is standardized, the data set in advance may be held. In step SR3, the CD-ROM drive 16
And outputs a voice through the speaker 24.

At step SR4, the time management table 2
Steps SR5 and SR6 are repeated according to 0. At step SR5, the time T set in the time management table 20 is set.
A composite image having an ID corresponding to each of 0, T1,... Is loaded from the external storage device 14 to the image memory 18R. Since the number of times of loading is 1 / m (= 1/8) of the number of composite black-and-white images, the number of loading is simply 1
/ M. At step SR6, the partial color maps 19-1,..., 19-m corresponding to the times t00, t01,... Set in the time management table 20 are selected.

As described above, audio and black-and-white animation can be provided simultaneously. Then, the external storage device 1
4, the number of loads to the image memory 18R is small, and the image can be changed by switching the partial color maps 19-1,..., 19-m, so that the processing is speeded up and high-quality animation can be provided. Become.

-Other Embodiment- Another embodiment is one in which the target image has four colors. In this case, n = 2 and m = 4 in the configurations of the first and second embodiments. Still another embodiment is one in which a target image is read from a VCR, a CD-ROM drive, or the like. At this time, the display is switched (set the time management table 20) at the same time interval as the sampling time interval of the target image.

In still another embodiment, z = 5
In a configuration in which n = 1 and m = 5 (a configuration in which five monochrome images are combined), the number of bits representing a pixel value is 3 (= R, G,
One example is an image in which the eight color images of B) are superimposed, and apparently uses an image memory of z = 8. This is useful for applications in which five black-and-white title images and one eight-color background image are combined into one composite image.

[0029]

According to the image processing system of the present invention, when a monochrome image or a four-color image is handled in a system in which the data amount of one image is determined corresponding to multiple colors,
Useless data portions can be prevented from occurring.
Therefore, writing and reading can be performed efficiently, and writing time and reading time can be reduced. Further, in a system in which the storage capacity of the image memory is determined in units of the data amount of one multicolor image, when displaying a monochrome image, a four-color image, or the like, the display processing can be speeded up. Therefore, the quality of the animation can be improved.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a CD-ROM manufacturing system according to a first embodiment of the present invention.

FIG. 2 is a flowchart of an image compounding operation in the CD-ROM production system of FIG.

FIG. 3 is a conceptual diagram of an image memory in the CD-ROM production system of FIG.

4 is a conceptual diagram of target image data in the CD-ROM production system of FIG.

FIG. 5 is a conceptual diagram of a composite image in the CD-ROM production system of FIG.

FIG. 6 is a conceptual diagram showing a configuration of a partial color map in the CD-ROM production system of FIG. 1;

FIG. 7 is a flowchart of a composite image preview operation in the CD-ROM production system of FIG. 1;

FIG. 8 is a conceptual diagram of a configuration of a time management table in the CD-ROM production system of FIG. 1;

FIG. 9 is a configuration diagram of a multimedia system according to a second embodiment of the present invention.

FIG. 10 is a flowchart of an operation of the multimedia system of FIG. 10;

FIG. 11 is a configuration diagram of a conventional CD-ROM production system.

12 is a configuration diagram of an image memory in the CD-ROM production system of FIG.

13 is a configuration diagram of a color map in the CD-ROM production system of FIG.

FIG. 14 is a configuration diagram of a conventional multimedia system.

15 is a configuration diagram of an image memory in the multimedia system of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CD-ROM production system 2 Multimedia system 11 Processing device 12 Instruction input device 13 Image scanner 14 External storage device 15 CD-ROM writer 16 CD-ROM drive 17 Display 18W, 18R Image memory 19-1, 19-2, ... Partial color map 20 Time management table 23 Amplifier 24 Speaker 80 Voice input device 119 Color map

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-60-83083 (JP, A) JP-A-60-111291 (JP, A) JP-A-60-128498 (JP, A) JP-A-61-1986 184589 (JP, A) JP-A-62-69289 (JP, A) JP-A-62-217373 (JP, A) JP-A-63-245567 (JP, A) (58) Fields investigated (Int. ⁷ , DB name) G09G 5/00-5/40 G06T 15/70

Claims (3)

(57) [Claims] An image memory having a storage capacity of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing a pixel value); (The number of pixels in the horizontal direction x) × (the number of pixels y in the vertical direction of the screen) × (the number of bits n representing a pixel value, where m = z / n
A target image input means for inputting a target image of 2 or more), and n bits representing pixel values of pixels at the same position of the m target images are connected to each other to form z bits, and (z in the horizontal direction of the screen) Image combining means for creating a combined image of (number of pixels x) × (number of pixels y in the vertical direction of the screen) × (number of bits z representing a pixel value) and storing the combined image in the image memory; comprising a, the image compositing means, first of z bits representing the pixel values of (a) an image memory
Clearing the nth bit from the 1st bit, (b) n bits representing the pixel value of the first target image and the image
First bit of z bits representing the pixel value of the image memory
To the n-th bit and the pixel value of the image memory
From the first bit to the n-th bit of the z bits
Was paid, each bit of z bits representing the pixel values of (c) an image memory
By n bits in the z-th bit direction, and
Is the first bit of z bits representing the pixel value of the memory
( 0 ) is stored in the n-th bit from the second target image.
1) Repeat the same for the up to the target image. (E) Repeat step (b) for the m-th target image.
An image processing system, characterized in that the Hare. 2. The image processing system according to claim 1 ,
And the first image memory in which the number of bits representing the pixel value is z
And a second image memory in which the number of bits representing the pixel value is w.
When the number of bits representing the pixel value is (z + w)
An image memory, and a composite image is stored in the first image memory.
Storing an image and representing pixel values in said second image memory
An image processing system for storing an image having a bit number of w . 3. An image memory having a storage capacity of (the number of pixels x in the horizontal direction of the screen) × (the number of pixels y in the vertical direction of the screen) × (the number of bits z representing the pixel value); (The number of pixels in the horizontal direction x) × (the number of pixels y in the vertical direction of the screen) × (the number of bits n representing a pixel value, where m = z / n
(N is an integer of 2 or more) of the target images, n bits representing the pixel value of the pixel at the same position are connected to each other to form z bits, and (the number of pixels x in the horizontal direction of the screen) × (the vertical direction of the screen) A composite image of (pixel number y) × (bit number z representing a pixel value) is read from an information recording medium such as a CD-ROM or a transmission line, and the composite image is stored in the image memory. Composite image input means, and m display map means for dividing z bits representing pixel values of the composite image stored in the image memory into m pieces each of n bits, and converting each n bit value into a display value Display map switching means for switching and selecting one of the m display map means in accordance with time; and image display means for displaying an image using a display value of the selected display map means. represent pixel values Wattage is the first image memory of z, the field
The second image memory having the number of bits representing the prime value w is united.
And the number of bits representing the pixel value is (z + w)
And a composite image is stored in the first image memory.
And a bit representing a pixel value is stored in the second image memory.
An image processing system for storing an image having a number w .