JPH01179191A - Method for displaying frame designating cursor - Google Patents

Abstract

PURPOSE:To facilitate the identification of a frame to be tested by displaying a frame designating cursor having a different color on a part of an image of a frame, when a frame designation by a frame designating key is executed to a color image of the frame. CONSTITUTION:In a color film analyzer, a print photograph is simulated and displayed as a color image on a monitor 33 at every 16-frame, and their density and color are corrected successively. In this case, with respect to an image whose finish is unsatisfactory, a frame designation is executed by a keyboard 34 for the purpose of its correction. As a result, image data to which a frame designating cursor is fitted is brought to negative/positive conversion, and the image data of the frame designating cursor is prepared. At the time of fitting in the cursor, when it is similar to a color of the periphery, its identification is difficult. Therefore, by adding a prescribed value to the image data of the frame designating cursor, it is corrected to a color which can be identified from an original image. Subsequently, the density and color are corrected against it. In such a way, the frame can be easily identified.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention is used in a video type color film analyzer, and has a frame designation cursor display for displaying a frame designated for film verification. It is about the method.

[Conventional technology]

This type of color film analyzer, as described in Japanese Patent Application Laid-Open No. 62-141530, sequentially images a plurality of frames recorded on a color film with a television camera (hereinafter referred to as a TV camera). The obtained image data of each frame is written into the memory, and after this writing, the image data of each frame is read out, and gradation conversion and negative/positive conversion are performed using the LATD value (Large Area Average Transmitted Density Value). It is known that the image is sent to a plurality of CRTs arranged in a row, and a color image simulating a printed photograph is displayed on each CRT. In this device, multiple CRTs display multiple frames of color images in a row, and the color and density of the color images displayed on the central CRT for verification can be manually corrected. Multiple C on one side of CRT
Color images of a plurality of unverified frames are displayed on the RT, and color images of a plurality of frames that have been corrected are displayed on a plurality of CRTs on the opposite side. Therefore, with respect to the color image displayed on the verification CRT, it is possible to determine whether the finish is appropriate by referring to a plurality of color images on both sides of the color image.

[Problem to be solved by the invention]

In the conventional color film analyzer described above, a plurality of CRTs are arranged in a line, which causes problems in that the device becomes large and the circuit configuration becomes complicated.

This problem can be solved by using a large-screen CRT and displaying a plurality of color images arranged in a matrix on the display surface.

When color images of a plurality of frames are displayed on the - number of screens in this manner, it is necessary to specify the frame (verification frame) to be manually corrected with a cursor. By the way, in the computer field, a line or square displayed in a specific color, such as white or gray, is used as a cursor, but when such a cursor is used, the color of the area where the cursor is displayed is If the color matches or is similar to the color of the cursor, it becomes difficult to identify the cursor.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a method for displaying a frame designation cursor that makes the frame designation cursor easier to see.

[Means to solve the problem]

In order to achieve the above object, the present invention provides that when a frame is specified using a frame specification key for a color image of a frame displayed on an image display means, a part of the color image of this frame is The frame designation cursor is displayed in a color different from that of the frame.

[Effect]

In the present invention, since the frame designation cursor is displayed in a color different from the color of the color image, it becomes easy to identify the test frame.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. - [Example] In FIG. 2 showing the appearance of a color film analyzer embodying the present invention, a supply reel 11 and a take-up reel 12 are detachably attached above a test section main body 10. A long film 13 is wound around the supply reel 11. A long film 13 is formed by joining a large number of developed color films, for example, color negative films, into one roll film.

Note that a transparent tape is bonded to the tip of the long film 13 as a part of the leader. The long film 13 pulled out from the supply roll 11 is moved to guide rollers 14 and 15.
and is sent to the photometry position via the feed roller 16. A photometric hood 17 is attached above this photometric position, and a sensor placed in the hood 17 measures the light of the frame positioned at the photometric position. An arm 18 equipped with a notch sensor is disposed between the feed roller 16 and the photometry position to detect a notch formed along the center line of the frame to be printed.

The long film 13 that has passed through the photometry position is sent to an imaging position. An imaging hood 21 housing a mirror is arranged above this imaging position, and the frame positioned at the imaging position is imaged by a TV camera via the mirror. In order to enable positioning at the imaging position and positioning at the photometry position to be performed independently, a recess 22 is formed, into which the long film 13 is inserted to form a loop. Further, an arm 23 is disposed between the recess 22 and the imaging hood 21, and a splice sensor for detecting a seam of color negative film and a notch sensor for detecting a notch are attached to the arm 23. It is being

The long film 13 that has passed through the insurance position is transferred to a feed roller 24. After passing through guide rollers 25, 26, it reaches the winding reel 12 and is wound around its outer periphery. A magnetic floppy 29 storing image data of a reference frame is loaded into the floppy insertion slot 28 . In addition, correction data for each frame is recorded in the punch code 130 at the end of the verification.

A color monitor 33 with a large screen size and a keyboard 34 are placed on the operation unit main body 32. In this embodiment, a color CRT is used as a color monitor (color image display means), but a liquid crystal display panel or the like may also be used. The keyboard 34 has color keys 35 degrees, density keys 36. Collection key 37. Alphanumeric keys 38. Operation key 39. Frame designation key 409 Next page key 41. It is equipped with a display 42.

The color keys 35 are a cyan key for correcting cyan and a magenta key for correcting magenta.

It consists of a yellow key for correcting yellow, and each color key is made up of a plurality of keys with different correction amounts in stages. The density key 36 is for correcting the density, and a plurality of keys with different correction amounts in stages are arranged in a row. The alphanumeric keys 38 are used to set print conditions and input data.

The operation key 39 is used for instructing the start of verification, designation of a printout display mode of correction data, and the like.

The frame specification key 40 is used to manually specify the frame to be corrected, and there are 16 frames corresponding to each frame.
The zero-order page key 41, which is made up of keys, is used to switch the display on the color monitor 33 to the next page. The display 42 is for displaying input data and the like.

On the display surface 33a of the color monitor 33, color positive images of a plurality of frames arranged in a matrix are displayed in the order in which they were taken. In this embodiment, there are 16-frame display, 12-frame display, and 1-frame display, and the display mode can be designated by operating the operation key 39 of the keyboard 34 before taking an image with the TV camera. In the 16-frame display shown in FIG. 4, there are four columns (A-D) in the vertical direction, each column consisting of four frames.
A total of 16 frames of color positive images 45 are displayed. Here, the A column is the one that was imaged first, and the D column was the one that was imaged last. In the same column, the color image of the frame on the left side is captured first. In the 12-frame display, the color images of the four reference frames read from the magnetic floppy 29 are displayed in column D, and the TV
The color image 45 of 12 frames captured by the camera is A-
Displayed in column C. In the one-frame display, one frame of color image is enlarged to the size of four frames and displayed on the display surface 33a.

FIG. 1 schematically shows a color film analyzer. A notch in the long film 13 is detected by a notch sensor 50 installed in the arm 18. The detection signal of the notch sensor 50 is sent to the CPU 52 via the I10 board 51. Since the distance between the notch sensor 50 and the photometry position is known in advance, the amount of transport of the long film 13 is measured from the time of notch detection.
By transporting the long film 13 by this distance,
The piece with this notch can be positioned at the measurement position. The amount of transport of the long film 13 can be measured, for example, by counting the driving pulses of the pulse motor 53 that transports the long film 13 using the CPU 52.

A negative mask 54 is placed at the measurement position, and the frame positioned at this position is illuminated with illumination light emitted from a lamp 55 and condensed by two condenser lenses 56. This illuminated frame is located at the photometric hood 17.
A scanner 58. Red sensor 59. It is measured by a green sensor 60 and a blue sensor 61.

The scanner 58 is composed of a lens 62 and an image area sensor 63, and photoelectrically converts each point of the image formed on the photosensitive section, and outputs it as a time-series signal. This time-series signal is converted into a digital signal by an A/D converter 64 and then sent to an arithmetic unit 65. This arithmetic unit 65 is composed of an 8-bit microcomputer, and logarithmically transforms the photometric data of each point, and writes the obtained density value into the memory. After this writing, read out the density value of each point belonging to the pre-specified area,
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. Find the corresponding density correction amount and use it as RA.
Write to M67.

The red color sensor 59. The green sensor 60 and the blue sensor 61 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 59 to 61 are converted into digital signals by an A/D converter 64, and then taken into the CPU 52 via the I10 boat 51.
The correction amount and ND filter value for each color are calculated. These color correction amounts and ND filter values are written into the RAM 67.

A pair of 2tfl feed rollers 68 and 69 are arranged on both sides of the negative mask 54, and these are driven by a pulse motor 53. The rotation of this pulse motor 53 is controlled by a motor controller 70, and transports the long film 13 and positions the frames.

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 is a notch sensor 71 attached to the arm 23. A splice sensor 72 is arranged. The notch detection signal output from the notch sensor 71 is sent to the CPU 52 via the I10 port 51, and is used for positioning the frame as described above. Further, the splice sensor 72 generates a splice detection signal when it detects a splice in one color negative film, and sends it to the CPU 52 via the I10 boat 51. When the CPU 52 receives the splice detection signal, it creates a splice frame 46 that displays the position of the joint on the color monitor 33, as shown in FIG. This splice frame 4
6 is created by shifting the writing position of image data by one frame on the image memory.

A negative mask 73 is arranged at the imaging position,
The frames positioned on this negative mask 73 are illuminated with illumination light from a lamp 75 that is diffused by a mixing box 74. This mixing box 74 and lamp 75
Two ND lafurters 76 are disposed between them, and are moved by a pulse motor 77 in opposite directions in a plane perpendicular to the optical path. This ND lafurter 76 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 78 are provided on both sides of the negative mask 73.
．． 79 is arranged and is driven by a pulse motor 80. The rotation of this pulse motor 80 is controlled by a motor controller 0, and the notched frames are sequentially positioned at the imaging position. The light transmitted through the frame positioned at this imaging position is reflected by a mirror 82 placed inside the imaging hood 21, and is reflected by a TV camera 82 placed inside the test section main body 10.
The image is taken with This TV camera 83 generates a red signal R1, a green signal G, a blue signal B, and a synchronization signal 5sync.

゛These red signals R9 green signals G.

After the blue signal B is subjected to image processing in the image processing section 84,
The image is sent to the color monitor 33. light controller 85
creates an address signal etc. based on the synchronization signal 5ync and controls writing in the image processing section 84. Further, the read controller 86 is controlled by the CPU 52 and creates address signals for reading by the image processing section 84, synchronization signals for sending to the color monitor 33, and the like.

The floppy driver 87 reads out the image data of the reference image written on the magnetic floppy 29 and writes it to the image processing section 84.The puncher 88 is activated at the end of the film inspection and collects correction data (color correction amount, density). correction amount) is recorded on the puncher 130. ROM89
Fixed data such as print conditions and programs that control the operations of each part are written in the . Work RAM9
0 is used for backing up image data, etc.

FIG. 3 shows an embodiment of 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 camera 83 is amplified by an amplifier 95 and then sent to a clamp circuit 96, where the level of the reference signal is set. The red signal output from the clamp circuit 96 is converted into a digital signal by an A/D converter 97 and then sent to a logarithmic converter 98. This logarithmic converter 98 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. The CPU 52 is the TV camera 8
3, the table data stored in the ROM 89 is written into the logarithmic converter 98.

The saturation correction circuit 99 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 section of the TV camera 83, and is used to weight the image data of each color. It consists of three lookup table memories 99a and an adder 99b that adds the outputs of these three lookup table memories 99a and outputs the addition result as red image data. cpu52 runs R before starting the film assay.
Read each of the three sets of coefficients stored in OM89,
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 99a.

The saturation-corrected red image data is sent to a demultiplexer.
Image memory 101a designated by 100.

101b. These image memories 101a and 101b have a memory capacity for one screen (one page) displayed on the color monitor 33, and writing and reading are performed alternately. Therefore, for example, while the image memory 101a is being read out one page of image data under the control of the read controller 86, T
New image data captured by the V camera 83 is transferred to the other image memory 101b controlled by the light controller 85.
will be written to. Next, when reading from the image memory 101b is started, writing to the other image memory 101a is started. By using the image memory for two pages in this manner, film inspection is prevented from being interrupted while image data is being captured.

The image memories 101a and 101b each consist of four memory blocks, and each memory block stores image data for one column (four frames). Therefore, by changing the reading order of the memory blocks, the display position of the color monitor 33 can be changed for each column. For example, "12
Because manual correction is required in case of “Frame display”,
When a frame is designated with the frame designation key 40, the row containing this frame is shifted to the 0th row position and displayed next to the reference image, thereby facilitating comparison with the reference image.

For the image memories 101a and 101b, the CPU 5
An interface 102 is provided in order to read and write image data using the computer 2. Image memory 1
The image data read from either one of 01a and 1olb is sent to a gradation conversion circuit 104 via a multiplexer 103, where negative/positive conversion and gradation conversion are performed. This gradation conversion circuit 104 is composed of 16 look-up table memories to correspond to a maximum of 16 frames displayed as one screen, and the gradation conversion circuit 104 is configured with 16 look-up table memories to correspond to a maximum of 16 frames displayed as one screen, and the frame is converted according to the photometry result of the frame and the amount of manual correction. The table data created each time is written by the CPU 52. These table data are created by shifting the reference table data of each color stored in the ROM 89 according to the color correction amount.

The image data subjected to gradation conversion for each frame is converted into a serial signal by a parallel-to-serial converter 105, and then sent to a D/A converter 106.

The red signal converted into an analog signal by the D/A converter 106 is sent to the color monitor 33.

Next, the operation of the above embodiment will be explained with reference to FIG. After turning on the power, operate the alphanumeric keys 38 on the keyboard 34 to specify the same print channel as the color printer to be used, in order to match the color film analyzer's verification conditions with the color printer's exposure conditions. . Next, the user operates alphanumeric keys to specify a display mode, for example, 16-frame display.

After installing the supply reel 11, pull out a portion of the transparent league bonded to the leading edge of the developed color negative film, hang it on the guide rollers 14 and 15, and then transfer it to the feed roller 16.
Insert it into the This feed roller 16 is driven by a pulse motor 53
Since the sensor is driven by the sensor, a part of the reader is moved toward the photometry position. This transferred tip is transferred to a pair of feed rollers 68 and 69 arranged on both sides of the negative mask 54 (81).
Further, a pair of feed rollers 78 and 79 are arranged on both sides of the imaging position.
I can be seen in the city. A portion of the leader that has passed through the imaging position is pulled out from the feed roller 24, so it is pulled out from the guide roller 25.
26 and then wrapped around the outer periphery of the take-up reel 12.

When a portion of the leader is pulled out from the supply reel 11, the developed color negative film is subsequently pulled out and transported toward the take-up reel 12. If the notch sensor 50 detects a notch during this transfer, the pulse motor 5
3 drive pulses are counted, and the film feed amount from the notch sensor 50 is measured. Then, when the first notch is moved a distance between the notch sensor 50 and the center of the negative mask 54, the pulse motor 53 stops rotating. In this state, the frame with the first notch is positioned at the photometry position.

The frame positioned at the photometry position is illuminated by a lamp 55, and in this state, each point of the negative image is photometered by a scanner 58, and LATD sensors 59 to 61
Accordingly, the LATD values of red, green, and blue are photometered.

When photometry is completed, the pulse motor 53 rotates again to transport the long film 13, position the second notched frame at the photometry position, and photometer this frame. Below 1,
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 71. When this notch is detected, the drive pulses of the pulse motor 80 are counted and the film feed amount is measured.

When the long film is fed by a certain amount, the pulse motor 80 stops rotating and the first frame is positioned at the imaging position. While this first frame is positioned at the imaging position, it is determined from the photometry result whether it is super overexposed or super underexposed, and for super overexposed frames, the CPU 52 drives the pulse motor 77. Then, the ND filter 76 is removed from the optical path, and the lamp 75 is removed.
The frame is illuminated with strong illumination light. Conversely, for underexposed frames, an ND filter 76 is inserted into the optical path to attenuate the illumination light.

Before the first frame is positioned at the imaging position,
Since the filter 76 has been adjusted, imaging by the TV camera 83 starts immediately after positioning is completed. The time-series red signal, green signal, and blue signal output from the TV camera 83 are sent to the image processing section 83, where A/D conversion, saturation correction, and storage two-tone conversion are performed. That is, as shown in FIG. 3, the red signal is amplified and clamped, and then converted into red image data by the A/D converter 97. This red image data is processed by a logarithmic converter 98
After converting to red image data proportional to the density value,
The signal is sent to the saturation correction circuit 99.

The saturation correction circuit 99 multiplies the three-color image data by coefficients and adds them, and outputs the added value as red image data. The red image data is sent to the demultiplexer 10.
The data is sent to the image memory designated by 0, for example, 101a, and written to the first memory area among the 16 memory areas designated by the write controller 85. Similarly, the second and subsequent frames are sequentially positioned at the imaging position, captured by the TV camera 83, and stored in the image memory 101.
It is written in a predetermined area of a.

Since the long film 13 is made by joining a large number of color negative films together with a transparent or white splice tape, the passage of the splice tape can be detected by measuring the density with the splice sensor 72. When this splice tape is detected, the frame located next to the splice tape is stored in the image memory 101.
One memory area is skipped on a and the data is written to the next memory area. This skipped memory area becomes a splice frame 46 as shown in FIG. 4 because no image data is written therein. This splice frame 4
By displaying 6, it is possible to know the beginning of one color negative film. Generally, it is desirable that the frames included in one color negative film have the same finish, but displaying the splice frames 46 makes this possible and is extremely convenient in practice.

When 16 frames including splice frames are captured, 1
Image reading for one page is completed. In this case, the demultiplexer 100 is switched to the image memo I7101b side and reading from the image memory 101a is started. When the image memory 101b enters the write mode,
Image data of a new frame read by the TV camera 83 is sent to the image memory 101b, and the image data is written as described above. In this way, the newly read 16 frame images are stored in the image memory 101a.

When the image memory 101a enters the read mode, the read controller 86 reads image data. This image data is sent to a gradation conversion circuit 104 via a multiplexer 103, where negative/positive conversion and gradation conversion are performed. Since this gradation conversion circuit 104 has a look-up table memory prepared for each frame, the one corresponding to the frame being read out is selected, and the image data is converted using the table data stored therein.

Here, table data created by shifting the reference table data according to the photometry results measured at the photometry positions is written in each lookup table memory.

The gradation-converted image data is converted into a serial signal by a parallel-to-serial converter 105, and then sent to a D/A converter 1.
06, the red signal is converted into an analog signal and the obtained red signal is sent to the color monitor 33.

Similarly, the green signal and the blue signal are read out, and one page containing 16 frames of color images 45 is displayed on the color monitor 33, as shown in FIG. Note that, in reality, the color image 45 of each frame is slightly separated so as not to stick to the adjacent color image, and the space between them is displayed as a white frame.

Since color images 45 of 16 frames simulating printed photographs are displayed on the color monitor 33, it is determined whether these densities and colors are appropriate. Then, for a color image that is recognized as having a poor finish, the user operates the frame designation key 40 on the keyboard 34 to designate a frame.

When a frame is specified, the image data of the specified frame is read out from the image memory 101a, as shown in FIG.
It is written into the work RAM 90 via the interface 102. Among the image data written in this work RAM 90, the frame designation cursor 4 as shown in FIG.
The image data of the specific area where 7 is inserted is sent to the CPU 5.
2, and this image data is subjected to negative/positive conversion (converted to complementary colors) to create image data for the frame designation cursor 47. Generally, when the frame designation cursor 47 is inserted and synthesized, it becomes difficult to identify the frame designation cursor 47 if the color is the same as or similar to the surrounding color. By the way, the area where the frame designation cursor 47 is displayed and the surrounding area are often the same - or II (11), so it is not practical to compare the color of this area with the color of the frame designation cursor 47. There is no frame specification cursor 47.
The image data is compared with the original image data stored in the work RAM 90, and if the data is the same or
If both image data are similar, a certain value is added to the image data of the frame designation cursor 47 to correct the color so that it can be distinguished from the original image. Note that subtraction may be performed instead of this addition.

The image data of the frame designation cursor 47 created in this way is transferred to the image memory 101a via the interface 102.
and written to part of the memory area of the read frame. Since the image data of this written portion is converted into negative/positive in the gradation conversion circuit 104, the frame designation cursor 47 is displayed as a negative image, which is the same as the image recorded on the color film. .

After specifying the frame, the user operates the color key 35 or the density key 36 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 35 or density key 36 may be operated again. If correction is required for another frame as well, the frame designation key 40 corresponding to this frame is operated. When this frame designation key 40 is operated, the frame stored in the work RAM 90 is written into the image memory 1o1a via the interface 102. After this writing, the image data of the newly designated frame is read out from the image memory 101a and the work RA is read out.
It is written on M90, and as mentioned above, some of it is negative.
Positive conversion is performed. As a result, the frame designation cursor 47 displayed on the color image of the corrected frame is erased, and the frame designation cursor 47 is displayed on the color image of the newly designated frame. The density and color of this newly designated frame can also be modified as described above.

If it is recognized that all the frames are finished well, the next page key 41 is operated. This next page key 4
When 1 is operated, 1 stored in the image memory 101b is
Six frames of image data are read out and displayed on the color monitor 33 as described above. The film inspection can be performed on one page of frames displayed on the color monitor 33 as described above. During this film inspection,
Transfer of the long film 13 is started, the 16 frames recorded thereon are sequentially imaged by the TV camera 83, and the obtained image data is written into the image memory 101a.

When the film verification is completed for all the frames recorded on the long film 13, by operating the operation key 39, the correction data for each frame stored in the RAM 67 is recorded on the punch tape 30. . This correction data is the sum of the amount of correction automatically calculated by the scanner 58 and the amount of manual correction manually entered. When printing a photo, if the puncher 130 is set in the printer, correction data is read from the puncher 130.

In addition, since the printer is equipped with red, green, and blue LATD sensors, these
ATD value is measured. The exposure amount for each color is measured from these LATD values, and by adding the correction data read from the punch tape 30, the exposure amount during photographic printing is adjusted for each color.

When displaying 12 frames, the keyboard 34 is operated to specify this display mode. After specifying the mode, the magnetic floppy 29 is set and the four reference images written therein are read out and written into the work RAM 90. After this writing, the image data of the reference image is read from the work RAM 90 and written to the memory areas of the image memories 101a and 101b corresponding to column D on the color monitor 33, respectively. In this 12-frame display, 12 frames are read at a time and displayed in columns A to 0. When inspecting the film, the finish can be checked by referring to the four reference images displayed in column D.

Even in the case of single-frame display, the user first operates the keyboard 34 to specify the display mode. In this one-frame display, imaging and display are performed one frame at a time, and a one-frame color image written to the image memory, for example 101a, in read mode is displayed in a large size in an area corresponding to four frames in the center of the screen. is displayed.

This size expansion can be achieved by electrically increasing the magnification through interpolation processing, or by shortening the sampling period of the A/D converter 97 to create image data for 4 frames. When displaying, press frame designation key 4 to correct the color.
When specifying a frame with 0, it is convenient to enlarge and display this frame.

Next, tone conversion will be explained with reference to FIG. The frame positioned at the photometry position is scanned by the scanner 63. L.A.
The light is measured by sensors 59 to 61 for TD photometry. These sensors 59-61 have red LATD values, green LAT
The D value and blue LATD value are each measured. These L
A gray average density value is calculated by arithmetic averaging the ATD values. Compare the obtained gray average density value with the gray average density of the super overexposed frame, and if it exceeds this value,
The measured frame is determined to be super overexposed. Further, by comparing it with the gray average density of the super-underexposed coma, if it is less than this value, it is determined that the measured frame is a super-underexposed coma. If the photometered frame is determined to be a super overexposed frame, a predetermined ND filter value is selected, and if it is determined to be a super underexposed frame, a predetermined ND filter value is selected. Select a value. For these super overexposed or underexposed comas, the amount of color correction for cyan, magenta, and yellow is calculated using the LATD value in consideration of the ND filter value. Furthermore, for cases other than super overexposure or undercoma, the color correction amount is calculated from the LATD value.

Since the scanner 58 measures the density of each point of the frame, it extracts the density of the measurement points included in a pre-designated area and calculates the density value of the area from the arithmetic mean. In this way, the density values of a plurality of areas are determined, and patterns such as front-lit scenes and back-lit scenes are classified. The density correction amount is calculated for each pattern from a predetermined arithmetic expression.

The color correction amount measured using the LATD sensors 59 to 61 and the density correction amount measured using the scanner 58 are added for each color and then written into the RAM 67. Here, since the density correction is to correct the same amount for cyan, magenta, and yellow, the density correction amount is converted into a color correction amount and then added. From the obtained correction amount for each color, the gradation conversion amount, which is the shift amount of the reference table data, is calculated for each color. These calculations are performed while the conveyance of the long film 13 is started after photometry is completed and the next frame is positioned at the photometry position.

Since the ROM 89 stores reference table data for each color (different depending on the color), the reference table data is read out after being shifted according to the amount of gradation conversion. For example, for red table data, the gradation It is sent to the conversion circuit 104 and written in the area corresponding to the frame whose gradation level should be changed.

When manual correction is performed by operating the keyboard 34, the manually input color correction amount and density correction amount (converted to color correction amount) are added to the color correction amount read out from the RAM 67, and this added value is calculated. Find the gradation conversion amount from
The reference table data is shifted again, and this shifted table data is written into the gradation conversion circuit 104.

Since the printer has a built-in sensor for LATD, the density correction amount calculated by the scanner is written to the RAM 67, and when manual correction is performed, this correction amount is added to the density correction amount of the scanner. It is written into the RAM 67 from then on. At the end of the test, this R
The correction amount for each frame stored in the AM 67 is read out and recorded in the puncher 130.

In the embodiment described above, color and density correction is performed by the gradation conversion circuit 104, but the lamp 75 and the mixing box 74
Cyan, magenta, and yellow light control filters may be arranged between the two and the amount of insertion into the optical path may be adjusted to perform color and density correction. Furthermore, this dimmer filter performs rough correction on color and density, and the gradation conversion circuit 104
It is also possible to make detailed corrections. Furthermore, the present invention can also be applied to color reversal films.

〔Effect of the invention〕

As described above in detail, according to the present invention, the frame designation cursor is displayed in a color different from the original color, so that the frame designation cursor can be easily identified. Furthermore, since a part of the original is inverted and displayed as a frame designation cursor, the frame designation cursor is easy to see and its data creation is easy. moreover,
If the negative/positive converted image has the same or similar color as the original, a certain value is added or subtracted from the image data of the frame designation cursor, so the frame designation cursor should be displayed in a different color from the original. Can be done. Furthermore, since the frame designation cursor is square, it is easy to insert and compose.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a color film analyzer embodying the present invention. FIG. 2 is an external view of the color film analyzer. FIG. 3 is a block diagram showing an example of an image processing section. FIG. 4 is an explanatory diagram showing an example of display on a color monitor. FIG. 5 is a flowchart showing the procedure for film verification. FIG. 6 is a flowchart showing the procedure of tone conversion. FIG. 7 is a flowchart showing the procedure for displaying the frame designation cursor. 13... Long film 17... Photometric hood 21... Imaging hood 29... Magnetic floppy disk 30... Punch tape 33... Color monitor 34... Keyboard 35... Color key 36... Density key 40... Frame specification key 41... Next page key 47... Frame specification cursor 58... Scanner 59... Red sensor 60...Green sensor 61...Blue sensor.

Claims (4)

[Claims] (1) In a video color film analyzer that images a plurality of frames recorded on a color film and arranges the color images of these frames in a matrix and displays them on an image display means, the frames displayed on the image display means When a frame is specified using the frame specification key for a color image,
A frame designation cursor display method characterized in that a frame designation cursor having a color different from that part is displayed in a part of a color image of this frame. (2) The frame designation cursor display method according to claim 1, wherein the frame designation cursor has a square shape. (3) The color of the frame designation cursor is a negative/positive inversion of the color of the color image in the area where the frame designation cursor is displayed. The frame specification cursor display method described. (4) If the image data of the color image and the image data of the frame designation cursor obtained by inverting the color image are similar, add or subtract a certain value to the negative/positive inverted image data. 4. The frame designation cursor display method according to claim 3, wherein the image data of the frame designation cursor is set as image data of the frame designation cursor.