JPH01200879A - Picture data fetch method - Google Patents

Abstract

PURPOSE:To display in the same size in a frame different in a screen size by executing an electric magnification conversion at the time of the fetch of picture data. CONSTITUTION:A TV camera 44 picks up the image of the frame recorded on a color film and the picture data of respective picture elements is written in a picture memory 71 through a buffer memory 72. At this time, the TV camera 44 fetches the picture data of all the picture elements within a constant range in the image pickup screen to the frame small in the screen size. The picture elements in the image pickup screen are thinned out at the interval of a constant number to fetch the picture data. The thinning out is carried out in the buffer memory 71.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an image data import method for importing color film image data captured by a television camera. This invention relates to a method for displaying frames of different screen sizes in the same size.

[Conventional technology]

A video color film analyzer is used to predict the finish of frames recorded on color film using a video system. The frames recorded on color film are captured by a television camera (hereinafter referred to as a TV camera).
The image data of each pixel is written into the image memory. After capturing this image data, the image data is read out from the image memory, subjected to various image processing, and then sent to an image display means, for example, a color CRT, where it is displayed as a color positive image on its display surface. The operator judges whether the finish will be appropriate by observing the color image of the frame displayed on the color C' RT, and if the finish is predicted to be inappropriate, Specify exposure correction data for printing.

In addition, as a display form of a color image, for example,
As described in No. 2-141530, a plurality of color CRTs are arranged in a row and one color image of one frame is displayed on one color CRT, and the other is, for example, European Publication No. 0108158. As described in , there is a color CRT that displays a plurality of color images arranged in a matrix on one color CRT.

[Problems to be Solved by the Invention] In the conventional color film analyzer described above, a color image of a 135-type full-size (hereinafter referred to as 135F) frame is normally displayed on a TV so that it almost matches the effective display surface of a color CRT. The camera's optical magnification is adjusted. Therefore, when a frame recorded on a color film having a screen size smaller than 135F, for example, a 110 type color film, is captured, the color image will be displayed in a small size. This makes it difficult to observe color images and also reduces the memory capacity of the image memory.

The result is that the display surface of the color CRT cannot be used effectively.

Generally, image size adjustment (magnification conversion) is performed optically using a zoom lens, etc.;

A pulse motor, a lens position detection sensor, etc. are required, which is disadvantageous in terms of cost when there are only a few different sizes, such as color films.

An object of the present invention is to provide an image data importing method that performs electrical magnification conversion at the time of importing image data so that even frames with different screen sizes can be displayed at the same size. be.

[Means to solve the problem]

In order to achieve the above object, the present invention captures a frame recorded on a color film with a television camera, and when capturing the image data of each pixel obtained into an image memory, it is possible to capture a frame recorded on a color film. captures the image data of all pixels within a certain range of the TV camera's imaging screen,
For frames with a large screen size, image data is captured by thinning out the pixels in the image capture screen at regular intervals.

For example, for 110 type film, the image data of all pixels in a certain range within the imaging screen is imported into the image memory, and for 135F, the image data is taken by thinning out the pixels in the imaging screen by a certain number. .

[Effect]

In the present invention, the magnification is electrically converted when image data is captured, and the number of pixels is the same even for frames with different screen sizes. can be displayed. Furthermore, the image memory and the image display means can be effectively utilized.

〔Example〕

FIG. 1 schematically shows the color film analyzer of the present invention. The long film 10 is made up of a plurality of color films, such as color negative films, joined together with a splice tape. A plurality of color negative images are recorded on these color negative films, and a notch is provided at a position along the center line of each frame. The long film 10 is nipped by two pairs of feed rollers 11 and 12 and fed in the direction of the arrow. During this transfer, the notch sensor 13 detects the notches made on each frame. The detection signal of the notch sensor 13 is sent to the CPU 15 via the I10 port 14. This notch sensor 13 and
Since the distance to the photometry position is known in advance, the amount of transport of the long film 10 is measured from the time when the notch is detected, and by transporting the long film 10 by this distance, the frame with this notch is located at the measurement position. can be positioned. The amount of transport of the long film 13 can be determined, for example, by counting drive pulses of a pulse motor 16 provided for driving the pair of feed rollers 11 and 12.

A negative mask 18 is placed at the measurement position, and the frame positioned at this position is illuminated with illumination light emitted from a lamp 19 and condensed by two condenser lenses 20. This illuminated frame is scanned by the scanner 21.
Red sensor 22° Green sensor 23. It is measured by the sensor 24 for blue color. The scanner 21 has a lens 25
and an image area sensor 26,
Each point of the image formed on the photosensitive section is photoelectrically converted and output as a time-series signal. This time series signal is sent to the A/D converter 2
7, it is converted into a digital signal, and then sent to the arithmetic unit 28.
sent to. This arithmetic unit 28 is configured with an 8-bit microcomputer, logarithmically transforms the photometric data of each point, and writes the obtained density value into the memory.

After this writing, the density value of each point belonging to the pre-designated area is read out, and these are arithmetic averaged to obtain the density value of the area. In this way, density values are obtained for multiple areas, for example, the center of the frame, and the remaining upper and lower half areas excluding this center, and the patterns are classified based on the density value distribution of each area. A density correction amount (color correction amount common to each color) is obtained from a correspondingly prepared arithmetic expression, and this is written into the RAM 29.

The red color sensor 22. The green sensor 23 and the blue sensor 24 are for measuring the LATD value of the positioned frame, and a lens is placed in front of it. The signals output from these sensors 22 to 24 are converted into digital signals by the A/D converter 27, and then taken into the CPUI 5 via the I10 port 14, where the correction amount and ND filter value for each color are determined. Calculated. These color correction amounts and ND filter values are RAM 2
9 is written.

The frames that have passed through the photometry position are transported to the imaging position after passing through a buffer loop. In front of this imaging position, a notch sensor 32 is provided to position the frame at the ↑ layer image position.

A negative mask 33 is arranged at the imaging position, and the frames positioned on this negative mask 33 are illuminated with illumination light from a lamp 35 that is diffused by a mixing box 34. Two ND filters 36 are arranged between the mixing box 34 and the lamp 35, and are moved by a pulse motor 37 in opposite directions in a plane perpendicular to the optical path.

This ND filter 36 is normally inserted at a standard position, is withdrawn from the optical path for extremely overexposed frames, and is further inserted into the optical path for extremely underexposed frames.

Two sets of feed rollers 3B are provided on both sides of the negative mask 330.
, 39 are arranged and are driven by a pulse motor 40. This pulse motor 40 has a motor controller 41
The rotation is controlled by , and the notched frames are sequentially positioned at the imaging position. The light transmitted through this positioned frame is reflected by a mirror 43 and then imaged by a TV camera 44.

This TV camera 44 has a red signal R9 and a green signal G.

Generates blue signal B, synchronization signal 5ync, and field signal. These red signal R9 green signal G.

After the blue signal B is subjected to image processing in the image processing section 45,
The image is sent to the color monitor 46. The color monitor 46 is composed of, for example, a color CRT, and displays a plurality of color images arranged in a matrix on its display surface 46a.

That is, as shown in FIG.
In D), each line consists of 4 frames. Here, row A is the color image of the frame imaged first, row D is the color image of the frame imaged last, and within the same row, the color image of the frame on the left side is imaged first.

The write controller 47 is controlled by the CPU 15, creates an address signal, etc. based on the synchronization signal 5ync and field No. 13F, and controls writing of image data in the image processing section 45. In addition, the lead controller 4
8 is controlled by the CPU 15 and sends an address signal for reading image data and a color monitor 46.
Create synchronization signals etc. to send to.

The keyboard 50 has color keys 51 . Density key 52, operation key 53. Alphanumeric keys 54. Frame specification key 551 Next page key 56. A size designation key 57 is provided. The color key 51 consists of a cyan key for correcting cyan, a magenta key for correcting magenta, and a yellow key for correcting yellow, and each color key is composed of a plurality of keys with different correction amounts in stages. has been done. The density key 52 is for correcting the density, and a plurality of keys with different correction amounts are arranged in one row. The operation key 53 is used to instruct the start of verification, printout of correction data, and the like. Alphanumeric keys 54
is used to set print conditions and input data.

The frame specification key 55 is used to manually specify the frame to be corrected, and there are 12 frames corresponding to each frame.
Consists of keys. The next page key 56 is used to switch the display on the color monitor 46 to the next page. The size specification key is used to input the size of the color film. Note that color film has a DX code printed on the side that indicates the type of film, so if a DX sensor is placed on the path of the long film 10, the film size can be automatically input. 135F (35mm full size) and 1
There is no problem even if the long film is a mixture of 35H (35 mm half size) and the like.

The puncher 60 is actuated at the end of film verification;
Exposure correction data (color correction amount, density correction amount) is recorded on the bunch tape 61. Fixed data such as print conditions and programs for controlling the operations of each part are written in the ROM 62.

FIG. 2 schematically shows the image processing section, and since the red signal processing system, green signal processing system, and blue signal processing system all have the same configuration, only the red signal processing system is shown. The red signal output from the TV left camera 4 is sent to the amplifier 6.
5 and then sent to a clamp circuit 66, where the level of the reference signal is set. The red signal output from the clamp circuit 66 is converted into a digital signal by an A/D converter 67 and then sent to a logarithmic converter 68. This logarithmic converter 68 is configured with a look-up table memory, and logarithmically transforms the input signal to convert it into image data proportional to the density value. CPU15 is TV left camera 4
The table data stored in the ROM 62 is written into the logarithmic converter 68 before imaging starts.

The saturation correction circuit 69 is for correcting the difference between the spectral sensitivity of the color paper used in the color printer and the spectral sensitivity of the imaging unit of the TV left camera 4, and weights the image data of each color. It consists of three lookup table memories 69a and an adder 69b that adds the outputs of the three lookup table memories 69a and outputs the addition result as red image data. Before starting the film verification, the CPU 15
Read each of the three sets of coefficients stored in OM62,
This is changed in steps to create three types of table data for red saturation correction, and write them into the corresponding one of the three lookup table memories 69a.

In response to a switching signal from the CPU 15, the selector 70 sends image data to the image memory 71 when the long film 10 is of the 135F or 110 type;
is sent to the image memory 71 after passing through the buffer memory 72. This buffer memory 72 is for rotating the 135H image by 90 degrees. Here, one frame is composed of 256 x 256 pixels (64K in total), and one gradation of the three primary colors of one pixel is expressed with 8 bits, so the buffer memory 72 has 8 64K pixels.
*1 bit RAMs 721 to 728 are used.

The image memory 71 is composed of a plurality of memory boards according to the level of gradation expression, and each memory board is composed of four blocks of RAM corresponding to each row A to D of the color image matrix. In this embodiment, eight memory boards 711 to 71B are used, and one memory board has four RAMs (256Kxl bits) a-d.
It consists of The RAM 711a is divided into four memory areas A1 to A4, and each memory area Al-A4 stores one frame of image data. The memory areas of the other RAMs 711b to 711d are labeled with alphabetical characters corresponding to the rows in FIG. It is also possible to configure one row by combining four 64K x 1-bit RAMs. Alternatively, two or more image memories may be provided, and when one of them is in the write mode, the remaining one may be used in the read mode. By using an image memory for two or more pages in this way, it is possible to eliminate interruptions in film inspection during the capture of image data.

The image data read from the image memory 71 is sent to a gradation conversion circuit 73, where negative/positive inversion and gradation conversion are performed. This gradation conversion circuit 73 is configured with 16 lookup table memories to correspond to a maximum of 16 frames displayed as a matrix, and uses table data stored in each lookup table memory. The image is then processed. These lookup table memories are created by shifting reference table data according to the photometric results of the frames and the manual correction amount. The image data subjected to gradation conversion for each frame is sent to the D/A converter 74. This D/A converter 74
The red signal converted into an analog signal is sent to the color monitor 46.

In order to write image data into the buffer memory 72 and image memory 71, four address signal generation circuits 78 to 81 are provided. These address signal generation circuits 78, 80, 81 use the synchronization signals (II 5sync, Vsync) and field signals output from the TV camera 44, and the clock signal of the clock generator 82 to generate the video from the TV camera 44. Generates an address signal in synchronization with the output of the signal. For 135H, in order to temporarily drop the image data into the buffer memory 72,
The address signal from address signal generation circuit 78 is sent to buffer memory 72 via selector 83. and,
When transferring image data from the buffer memory 72 to the image memory 71, the address signal output from the address signal generation circuit 79 is sent to the address conversion circuit 84. This address conversion circuit 84 rotates the image by 90 degrees by exchanging the horizontal and vertical addresses.

Note that the selector 83 selects an address signal using a switching signal from the write controller 47.

The selector 85 is controlled by the write controller 47 and selects one of the three address signals output from the address signal generation circuits 79 to 81, respectively. This selected address signal is sent to the adder 86, added to the start address output from the start address designation circuit 87, and then sent to the image memory 71 via the selector 88.
sent to. This head address designation circuit 87 is for designating which of the 16 memory areas image data is to be written. The selector 88 is the adder 86
Either one of the write address signal output from the address signal generation circuit 89 and the read address signal output from the address signal generation circuit 89 is selected.

Next, film verification will be explained. First, after setting the developed long film 10, in order to match the test conditions of the color film analyzer and the exposure conditions of the color printer, press the alphanumeric key 5 of the keyboard 50.
4 to specify the same print channel as the color printer to be used.Next, operate the size designation key 57 to designate the film size, for example 135F.

When the start of film inspection is instructed, the long film 10 is transported in the direction of the arrow, and during this transport, a notch is detected by the notch sensor 13. By controlling the film feed amount based on this notch detection, the frame with the first notch is positioned at the photometry position. The frame positioned at the photometry position is illuminated by a lamp 19, and in this state, each point of the negative image is photometered by a scanner 21, and the LATD values of red, green, and blue are photometered by sensors 22 to 24 for LATD. be done. When photometry is completed, the pulse motor 16 rotates again to transport the long film 10, positions the second notched frame at the photometry position, and measures the light. Thereafter, the third and subsequent frames are also sequentially positioned at the photometry position and photometered.

When the first frame for which photometry has been completed is transported toward the imaging position, the notch of the first frame is detected by the notch sensor 32. The film feed amount is controlled based on this notch detection, and the first frame is positioned at the imaging position. While this first frame is positioned at the imaging position, it is determined whether it is super overexposed or super underexposed from the photometry results of the LATD sensors 22 to 24, and whether the super overexposed frame is teeth,
The CPU 15 drives the pulse motor 37, moves the ND filter 36 out of the optical path, and illuminates the frame with strong illumination light from the lamp 35. Conversely, for underexposed frames, an ND filter 36 is inserted into the optical path to attenuate the illumination light.

Before the first frame is positioned at the imaging position,
Since the film 36 has eight turns, imaging by the TV camera 44 starts immediately after the installation is completed. The time-series red, green, and blue signals output from the TV camera 44 are sent to an image processing section 45, where A/D conversion, saturation correction, and storage two-tone conversion are performed. That is, as shown in FIG. 2, the red signal is amplified and clamped, and then converted into red image data by the A/D converter 72. This red image data is converted by a logarithmic converter 73 into red image data proportional to the density value, and then sent to a saturation correction circuit 74.

The red image data corrected again by the saturation correction circuit 74 is sent to the image memory 71 via the selector 70.

The address signal generation circuits 78 to 81 operate in synchronization with the image processing of the red image, but since the color negative film being imaged is 135F, the selector 85 takes out the address signal from the address signal generation circuit 79 and outputs it. It is sent to adder 86.

When capturing the first frame, the start address designation circuit 8
7 outputs an address signal for the origin position of the first memory area Al of each memory board 711-718. This address signal of the origin position and the address signal taken out from the selector 85 are added, and the obtained address signal is sent to the image memory 71 via the selector 88. Since the image data for one pixel is 8 bits for each color, red image data is written one bit at a time to eight memory boards 711 to 718 simultaneously designated by the address signal. Thereafter, the red image data of each pixel input via the selector 70 is written into the image memory 71 in the same manner. Note that green image data and blue image data are also written to the image memory in the same way.

When writing of the image data for the first frame is completed, the pulse motor 40 rotates again to position the second frame at the imaging position. Further, the light controller 47 is
A signal indicating the number of captured frames is sent to the start address designation circuit 8.
Send to 7. This head address designation circuit 87 outputs the head address signal of the second memory area A2 of each memory board 711 to 718, and writes the image data of the second frame therein.

The 16 frames of image data sequentially read by the TV camera 44 in this manner are written into the image memory 71. After reading this image, the read controller 48 sets the image memory 71 to continuous read mode. Then, the address signal output from the address signal generation circuit 89 is extracted by the selector 88 and sent to the image memory 71.

According to this address signal, the image data written in the image memory 71 is read out and sent to the gradation conversion circuit 73. Since a look-up table memory is prepared for each frame, the gradation conversion circuit 73 selects a look-up table memory corresponding to the frame being read, and converts the image data using the table data stored therein. Here, different table data is written for each frame in the lookup table memory for print frames. This table data is created by shifting the reference table data according to the density correction amount obtained by photometry by the scanner 21 and the color correction amount obtained by photometry by the LATD sensors 22 to 24.

The gradation-converted image data is converted into an analog signal by the D/A converter 73, and the obtained red signal is sent to the color monitor 46. Similarly, the green signal and the blue signal are read out, and as shown in FIG.
is displayed on the color monitor 46. In fact, 16
The color images 92 are spaced apart a little so as not to stick to adjacent color images, and the space between them is displayed as a white frame.

The 16-frame color image 92 is observed to determine whether the finish is appropriate.

Then, for a color image whose finish is deemed to be poor, the frame is designated by operating the 500-frame designation key 55 on the keyboard. Note that when this frame specification is performed, the frame specification cursor (
(not shown) is displayed. Next, the color key 51 or the density key 52 is operated to input the correction amount. When this correction amount is input, the table data of the look-up table memory that performs the gradation conversion of the specified frame is updated.

Since the image data is converted using this new table data, the color image of the specified frame is displayed with the density or color corrected. If this correction is insufficient, the color key 51 or density key 52 may be operated again.

If it is recognized that all the frames are finished well, the next page key 56 is operated. Next heeshky 5
6 is operated, the TV left camera 4 takes an image and displays a simulated color image of the print image, and film verification can be performed on these 16 frames.

When the film verification has been completed for all the frames recorded on the long film 10, by operating the operation key 53, the exposure correction data for each frame stored in the RAM 29 is recorded on the punch tape 61. Ru. This correction data is the sum of the amount of correction automatically calculated by the scanner 21 and the amount of manual correction manually entered. When printing a photo, if the puncher 161 is set in the printer, the correction data is read from the puncher 161.
It is added to the LATD value of each color measured by the LATD sensor built into the printer, and the amount of exposure when printing the photograph is determined for each color.

135H, the size designation key 57 is operated to manually set the film size. In this case, the image data of the frame read from 135H is written into the buffer memory 72 by the address signal of the address signal generation circuit 78. After writing into the buffer memory 72, the address signal from the address signal generation circuit 79 is sent to the address conversion circuit 84, where the horizontal address and vertical address are exchanged. Image data is read out from the buffer memory 72 using this orthogonally transformed address signal, and the address signal generation circuit 79
The data is written to the image memory 71 specified by the address signal.

In this way, in 135H, the image data of each frame is written into the image memory 71 via the buffer memory 72. 16
After writing the frame image data, the image data is read from the image memory 71 and sent to the color monitor 46. On this color monitor 46, 16 color images are arranged in a matrix and displayed in the same size as 135F. However, in this 135H, since the addresses are orthogonally transformed, each color image is rotated by 90 degrees and is oriented horizontally.

When performing film verification on 110 type color negative film, the address signal generation circuit 81 is activated, and the address signal output from this circuit specifies the address of the image memory 71, and the image read by the TV left camera 4 is output. Data is written to image memory 71.

Next, the relationship between the effective image capture screen of the TV left camera and the image memory will be explained with reference to FIGS. 3 to 5. Effective imaging screen of TV left camera 4 (hereinafter simply referred to as imaging screen) Io
o includes 512 scanning lines in the vertical direction (V). Here, even numbers represent scanning lines of 0 field, and odd numbers represent scanning lines of l field (interlaced field). Further, sampling is performed 512 times for one scanning line. Therefore, the imaging screen has 512 pixels in each of the horizontal and vertical directions, and one frame image is composed of 256 pixels in total.

On the other hand, since one memory area of the image memory 71 is made up of 64 bits, it is possible to store 64 pixels. Therefore, in step 135H, image data of one pixel taken horizontally and vertically among the 256 pixels imaged by the TV camera is taken into the image memory 71. That is, for image data of 0 field,
The image data of each pixel is extracted by thinning out one pixel at a time in the horizontal direction. This pixel thinning is performed by the address signal generation circuit 80. As a result, as shown in FIG. 4(A), image data of 64 pixels, which are even numbers in both directions, is written into the memory area of the image memory 71. Here, X indicates the address in the horizontal direction, Y indicates the address in the vertical direction, and the numbers in parentheses indicate the image capture screen 1.
It represents the direction at 00.

Since the magnification of the optical system is adjusted so that the captured screen of the TV camera 44 and the frame of 135F match, in 135H, the hatched area in FIG. 3 is the size of one frame. In this hatched part, pixels in the horizontal direction are from Nth to (N+255)th. The address signal generation circuit 78 processes pixels from the Nth to (N+255) without thinning out pixels in the horizontal direction for the image data of the 0 field.
Take out all the pixels in the buffer memory 72.
write to. In other words, since this 135H does not perform interlacing, the image is lengthened in the vertical direction, so by compressing it to 1/2 in the vertical direction and leaving it as is in the horizontal direction, the image can be compressed without distortion. ,
256 pixels in the horizontal and vertical directions, a total of 64 pixels, are extracted and the image data of these pixels is written into the buffer memory 72.

The image data written to the buffer memory 72 is
The address is orthogonally transformed, read out, and written into the image memory 71. Therefore, as shown in FIG. 4(B), an image composed of 64 pixels is captured into the image memory 71 in a state rotated by 90 degrees. Note that since the aspect ratio of the color monitor 46 is 3:4, when the image is rotated by 90 degrees, a slight elongation occurs in the vertical direction of the color monitor 46. Therefore, in order to eliminate this delay, when writing image data to the buffer memory 72, it is preferable to thin out one pixel out of every five pixels in the horizontal direction.

For 110 type color negative film, the range shown by cross hatching in FIG. 3 is the size of one frame. This range is from the Nth horizontally to (N+255)
up to the Mth in the vertical direction (M+255)
up to the th. Therefore, both horizontal and vertical directions are 2.
Since there are 56 pixels, there is no thinning in both directions.
The image is written into the image memory 71 as is.

As mentioned above, in 135F, pixels are reduced by 1/2 in both directions.
By thinning out to 2, the number of pixels is compressed to the same number as the 110 type, and in the 135H, the number of pixels in the vertical direction of the image capture screen is reduced to 1/2, so the number of pixels is also the same as the 110 type. Therefore, for all of the 135F, 135H, and 110 types, the color image of one frame is displayed in the same size on the color monitor 46.

FIG. 5 is for explaining writing of pixels. 1
35'F and 110 types represent pixels written to the image memory 71, and 135H represents pixels written to the buffer memory 72.

In the embodiment described above, color images of a plurality of frames are arranged and displayed in a matrix, but the present invention can also be used when displaying a single frame in a large size on a color monitor.

〔Effect of the invention〕

As explained in detail above, according to the present invention, when writing image data to the image memory, image data of all pixels is captured for a frame with a small screen size, and image data of all pixels is captured for a frame with a larger screen size. Since the pixels of each frame are thinned out and captured, even if the screen size is different, the images can be displayed on the image display means at approximately the same size. In particular, when the present invention is used for video display of 135F and 110 type color films, the pixel thinning rate is converted into an integer, so it can be implemented without using complicated circuits.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a color film analyzer of the present invention. FIG. 2 is a block diagram showing an example of an image processing section. FIG. 3 is an explanatory diagram showing the relationship between the imaging screen and frame size. Figure 4 shows 135F, 135H, and 110 types.
FIG. 3 is an explanatory diagram showing each pixel written in an image memory. FIG. 5 is a timing chart for explaining pixel writing. FIG. 6 is an explanatory diagram showing a state in which frames of 135F are displayed on a color monitor. 10... Long film 21... Scanner 22-24... LATD sensor 46... Color monitor 50... Keyboard 57... Size specification key 72... Buffer Memory 71... Image memory. +00 (1 side 1 side) (B) (C)

Claims (2)

[Claims] (1) When capturing images of frames recorded on color film with a television camera and importing the image data of each pixel obtained into the image memory, for frames whose screen size is small, a certain amount of image data within the image capturing screen of the television camera is used. An image data importing method characterized in that image data of all pixels in a range is imported, and for frames with a large screen size, pixels in the captured screen are thinned out at regular intervals and the image data is imported. (2) The image data importing method according to claim 1, wherein the frame having a small screen size is a 110 type film, and the frame having a large screen size is a full size 135 type film.