KR100724183B1 - Multi-gradation monochromatic image display method, multi-gradation monochromatic image display device computer, monochromatic display device, re-conversion adapter, and video card - Google Patents

Abstract

A monochrome image (e.g., 1,024) with a frequency higher than that of the monochrome image (e.g. 256) that can be used in the operating system 13 is converted into a color image and transmitted to the operating system 13. Since the operating system 13 is a color image within the number of color branches (for example, the number of colors 16,777,216) that can be handled, the operating system 13 can be output as it is. Next, a monochrome image having a number of gray scales (e.g., 1021 or 1024) more than the number of gray scales (e.g. 256) of the black and white image that can be handled by the operating system 13 is handled by the color image received by the operating system 13. The image is reconverted and displayed. As a result, it is possible to display a multi-tone monochrome image exceeding the limitations of the conventional operating system without making major changes to hardware or software.

Operating system, monochrome image, color image, multi gradation

Description

MULTI-GRADATION MONOCHROMATIC IMAGE DISPLAY METHOD, MULTI-GRADATION MONOCHROMATIC IMAGE DISPLAY DEVICE COMPUTER, MONOCHROMATIC DISPLAY DEVICE, RE- CONVERSION ADAPTER, AND VIDEO CARD}

The present invention relates to a multi-gradation monochrome image display method, a multi-gradation monochrome image display device, a computer, a monochrome display device, a reconversion adapter, and a video card. More specifically, a multi-grayscale black-and-white image display method capable of displaying multi-grayscale black-and-white images exceeding the limitation of an operating system without making major changes to hardware or software, a multi-grayscale black-and-white image display apparatus, a computer, A black and white display device, a reconversion adapter, and a video card.

In the case of Windows XP, which is an example of a conventional operating system, for the color image, the luminance of R, G, and B is independently 8-bit gray scale. As a result, the color can be represented by 3 x 8 = 24 bits. By the way, with respect to the black-and-white image, since the brightness | luminance of R, G, and B is made into the same value, it is limited to 8-bit gradation.

On the other hand, in medical black and white images, it is desirable to be able to handle black and white images of 10-bit gray scales or 12-bit gray scales in order to increase diagnostic accuracy, and application software having a capability of handling such multi-gray scale black and white images is also known. .

By the way, for example, when a monochrome image of 10-bit grayscale is transmitted to an operating system in which the number of monochrome grayscales is limited to 8 bits and displayed on the display device, conventionally, up to the upper 8 bits of the monochrome image are made effective, and the lower portion is cut off ( I was doing.

However, with this, the low-detail (small importance) gradation that a multi-gradation monochrome image originally had becomes obsolete.

On the other hand, the black-and-white display device also has the capability to display a black-and-white image of 10-bit grayscale, for example, in general.

However, as described above, since the upper 8 bits of the black-and-white image are validated from the limitations of the conventional operating system and cut off below it, even in a black-and-white display device capable of displaying a black-and-white image of 10-bit gradation, As a result, an 8-bit grayscale image is displayed.

In addition, although the input 8-bit gradation may be extended to 10-bit gradation in a monochrome display device, this is because gamma correction is performed, and the number of gradations of the displayed monochrome image is not extended to 10 bits.

On the other hand, if a monochrome image of 10-bit gradation is to be transmitted from a dedicated software or dedicated hardware to a monochrome display device without using a conventional operating system or video card, for example, a monochrome image is displayed using 10-bit gradation. can do.

However, preparing dedicated software and dedicated hardware incurs a large cost increase.

Accordingly, an object of the present invention is to provide a multi-gradation monochrome image display method capable of displaying multi-gradation monochrome images exceeding the limitations of the conventional operating system without making major changes to hardware or software, a multi-gradation monochrome image display apparatus, A computer, a monochrome display device, a reconversion adapter, and a video card are provided.

Further, Japanese Patent Laid-Open No. 2001-34232 discloses a black and white image of multiple gradations (e.g., 1024 gradations) using a color image display device (e.g., 256 gradations for all of R, G, and B) with a small number of luminance gradations. A method of displaying is proposed.

On the other hand, the present invention wants to display a multi-grayscale black-and-white image (e.g., 1024 grayscales) using a black-and-white image display device (e.g., 1024 grayscales) capable of displaying a multi-grayscale black-and-white image, but on a computer operating system By solving the problem that a black and white image display device cannot be saved due to the limitation, the problem, configuration, and effect are completely different from the invention of JP-A-2001-34232.

In the first aspect, the present invention relates to an operating system 13 in which the number of colors of a color image is greater than that of a monochrome image, and that the number of gradations that are larger than that of the monochrome image that can be handled by the operating system 13 is achieved. Converts the black and white image into a color image and transmits the color image, and reconverts and displays the color image output from the operating system 13 into a black and white image having a higher number of gray levels than the gray number of the monochrome image that can be handled by the operating system 13 A multi-gradation monochrome image display method is provided.

In the multi-gradation monochrome image display method according to the first aspect, the monochrome image (e.g., 1,024) having a higher number of gradations than the gradation number (e.g. 256) of the monochrome image that can be handled by the operating system 13 is selected. The image is converted into a color image and transmitted to the operating system 13. Since the operating system 13 is a color image within the number of color branches (for example, the number of colors 16,777,216) that can be handled, the operating system 13 can be output as it is. Next, a monochrome image having a number of gray scales (e.g., 1021 or 1024) larger than the number of gray scales (e.g. 256) of the black and white image that can be handled by the operating system 13 in the color image received from the operating system 13 The image is reconverted and displayed. As a result, it is possible to display a multi-tone monochrome image exceeding the limitations of the conventional operating system without making major changes to hardware or software.

In the second aspect, the present invention provides a multi-grayscale monochrome image display method having the above configuration, wherein the grayscale value of the monochrome image is [x] = 0 to 1023, and the RGB value of the color image is r = 0 to 255, g. When = 0 ~ 255, b = 0 ~ 255,

 [x] = 0-255,

 x = r × 5/4 + g × 9/4 + b × 2/4

,

 at [x] = 256, r = 63, g = 63, b = 70,

 in [x] = 257-512,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 1

,

 at [x] = 513, r = 127, g = 127, b = 134,

 in [x] = 514-769,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 2

,

 at [x] = 770, r = 191, g = 191, b = 198,

 in [x] = 771-1023,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 3

A multi-gradation monochrome image display method is provided.

In the multi-gradation monochrome image display method according to the second aspect, the gray scale value [x] of the monochrome image and the RGB values (r, g, b) of the color image are applied to the NTSC-based weighted average method of converting the color signal into a monochrome signal. As a result, the color image output by the normal application software via the operating system or the color image output by the operating system itself can be viewed as a natural black and white image (1024 gray scales) on the black and white display device.

In a third aspect, the present invention provides a multi-gradation monochrome image display method having the above configuration, wherein the gray scale value of the monochrome image is [x] = 0 to 2047, and the RGB value of the color image is r = 0 to 255, g. When = 0 ~ 255, b = 0 ~ 255,

 [x] = 0-255,

 x = r × 5/2 + g × 9/2 + b × 2/2

,

 at [x] = 256, r = 33, g = 32, b = 29,

 in [x] = 257-512,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 1

,

 at [x] = 513, r = 65, g = 64, b = 61,

 in [x] = 514-769,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 2

,

 at [x] = 770, r = 97, g = 96, b = 93,

 in [x] = 771-1026,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 3

,

 [x] = 1027, r = 129, g = 128, b = 125,

 in [x] = 1028-1283,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 4

,

 at [x] = 1284, r = 161, g = 160, b = 157,

 in [x] = 1285-1540,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 5

,

 [x] = 1541, r = 193, g = 192, b = 189,

 [x] in = 1542 ~ 1797,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 6

,

 [x] = 1798, r = 224, g = 223, b = 228,

 in [x] = 1799-2047,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 7

A multi-gradation monochrome image display method is provided.

In the multi-gradation monochrome image display method according to the third aspect, the gray scale value [x] of the monochrome image and the RGB values (r, g, b) of the color image are applied to the NTSC-based weighted average method of converting the color signal into a monochrome signal. As a result, the color image outputted by the normal application software via the operating system or the color image outputted by the operating system itself can be viewed as a natural black-and-white image (2048 gray scale) on the black-and-white display device.

In a fourth aspect, the present invention includes a computer 10A and a black and white display device 20A, wherein the computer 10A includes an operating system 13 in which the number of colors of the color image is greater than the number of gray levels of the monochrome image. A monochrome image output means 11 capable of outputting a monochrome image having a larger number of gray scales than the gray scale number of monochrome images handled by the operating system 13, and a multi-gradation output by the monochrome image output means 11; Monochrome / color conversion means 12 for converting a monochrome image into a color image and outputting it to the operating system 13; and a video card 14 capable of outputting digital data of a color image output from the operating system 13; And the monochrome display device 20A has a color image input from the video card 14 more than the number of gray levels of the monochrome image that can be handled by the operating system 13. A multi-gradation black and white image display means 23 capable of displaying the reconverted multi-gradation black-and-white image, and the multi-gradation black-and-white image display means 23 for re-converting the gray-scale image to a black-and-white image. A monochrome image display apparatus 100A is provided.

In the multi-tone monochrome image display apparatus 100A according to the fourth aspect, the multi-grayscale monochrome image display method according to the first aspect can be suitably implemented. And a normal video card can be used as it is.

In a fifth aspect, the present invention includes a computer 10A, a reconversion adapter 40, and a black and white display device 20, wherein the computer 10A has a color number of the color image than that of the gray level of the black and white image. A large number of operating systems 13 and a black and white image output means 11 capable of outputting a black and white image having a larger number of gray scales than the gray number of black and white images handled by the operating system 13, and the black and white image output means ( Outputs the black and white / color conversion means 12 for converting the multi-gradation monochrome image outputted by 11) into a color image and outputting it to the operating system 13, and digital data of the color image output from the operating system 13; And a video card 14 capable of being used, wherein the reconversion adapter 40 is a system of monochrome images that can handle color images input from the video card 14 in the operating system 13. And a color / monochrome converting means 42 for reconverting to a monochrome image having a larger number of gradations, and the monochrome display device 20 is capable of displaying a multi-grayscale monochrome image input from the reconversion adapter 40. A multi-tone monochrome image display device 100B is provided, which includes a multi-tone monochrome image display means 23 that can be used.

In the multi-tone monochrome image display apparatus 100B according to the fifth aspect, the multi-grayscale monochrome image display method according to the first aspect can be suitably implemented. And a normal video card and monochrome display apparatus can be used as it is.

In a sixth aspect, the present invention includes a computer 10C and a black and white display device 20, wherein the computer 10C has an operating system 13 in which the number of colors of the color image is greater than the number of gray levels of the monochrome image. And a black and white image output means 11 capable of outputting a black and white image having a larger number of gray scales than the black and white image handled by the operating system 13 and the black and white image output means 11 outputting. The operating system 13 can handle monochrome image / color conversion means 12 for converting a multi-grayscale monochrome image into a color image and outputting the same to the operating system 13 and the color image output from the operating system 13. Color / monochrome converting means 16 for reconverting to a monochrome image of more gradation numbers than the gradation number of greyscale images capable of outputting digital data of the reconverted multi-grayscale monochrome image. And a video card 14C which can be used, and the monochrome display device 20 includes a multi-tone black and white image display means 23 capable of displaying a multi-tone black and white image input from the video card 14C. A multi-gradation monochrome image display apparatus 100C is provided.

In the multi-gradation monochrome image display apparatus 10000 according to the sixth aspect, the multi-gradation monochrome image display method according to the first aspect can be suitably implemented. And a normal monochrome display device can be used as it is.

In the seventh aspect, the present invention provides a multi-gradation monochrome image display apparatus having the above-described configuration, wherein the gray scale value of the monochrome image is [x] = O-1023, and the RGB value of the color image is r = 0 to 255, g. When = 0 ~ 255, b = 0 ~ 255,

 [x] = 0-255,

 x = r × 5/4 + g × 9/4 + b × 2/4

,

 at [x] = 256, r = 63, g = 63, b = 70,

 in [x] = 257-512,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 1

,

 at [x] = 513, r = 127, g = 127, b = 134,

 in [x] = 514-769,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 2

,

 at [x] = 770, r = 191, g = 191, b = 198,

 in [x] = 771-1023,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 3

A multi-gradation monochrome image display apparatus is provided.

In the multi-tone monochrome image display device according to the seventh aspect, the multi-grayscale monochrome image display method according to the second aspect can be suitably implemented.

In the eighth aspect, the present invention provides a multi-gradation monochrome image display apparatus having the above-described configuration, wherein the gray scale value of the monochrome image is [x] = 0 to 2047, and the RGB value of the color image is r = 0 to 255, g. When = 0 ~ 255, b = O ~ 255,

 [x] = 0-255,

 x = r × 5/2 + g × 9/2 + b × 2/2

,

 at [x] = 256, r = 33, g = 32, b = 29,

 in [x] = 257-512,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 1

,

 at [x] = 513, r = 65, g = 64, b = 61,

 in [x] = 514-769,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 2

,

 at [x] = 770, r = 97, g = 96, b = 93,

 in [x] = 771-1026,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 3

,

 [x] = 1027, r = 129, g = 128, b = 125,

 in [x] = 1028-1283,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 4

,

 at [x] = 1284, r = 161, g = 160, b = 157,

 in [x] = 1285-1540,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 5

,

 [x] = 1541, r = 193, g = 192, b = 189,

 [x] in = 1542 ~ 1797,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 6

,

 [x] = 1798, r = 224, g = 223, b = 228,

 in [x] = 1799-2047,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 7

A multi-gradation monochrome image display apparatus is provided.

In the multi-tone monochrome image display device according to the eighth aspect, the multi-grayscale monochrome image display method according to the third aspect can be suitably implemented.

In a ninth aspect, the present invention provides a multi-gradation monochrome image display apparatus having the above-described configuration, wherein the monochrome / color conversion means 12 uses the table 1, 1 ', 1 " Provided is a multi-grayscale black and white image display device characterized by converting a grayscale value [x] of a multi-grayscale black and white image into RGB values (r, g, b) of the color image.

In the multi-gradation monochrome image display device according to the ninth aspect, the use of the tables 1, 1 ', 1 "enables high-speed processing, and the use of arithmetic expressions reduces the required storage capacity. When the / color conversion unit 12 is configured by software, the implementation is easy, and when configured by hardware, high speed processing is possible.

In a tenth aspect, the present invention is the multi-gradation monochrome image display device having the above configuration, wherein the monochrome / color conversion means 12 is included in the monochrome image output means 11. Provided is a black and white image display device.

In the multi-tone monochrome image display apparatuses 100A, 100B, and 100C according to the tenth aspect, since the monochrome image output means 11 includes the monochrome / color conversion means 12, it is easy to implement. In addition, if the monochrome image output means 11 is constituted by software, implementation becomes easy, and if comprised by hardware, high speed processing is attained.

In the eleventh aspect, the present invention relates to an operating system 13 in which the number of colors of a color image is greater than that of a black and white image, and that the number of gradations is greater than that of the monochrome image that can be handled by the operating system 13. Black-and-white image output means 11 capable of outputting black-and-white images, and black-and-white / color conversion for converting the multi-tone black-and-white image output by the black-and-white image output means 11 into a color image and outputting it to the operating system 13. Means 12 and color / monochrome conversion means for reconverting the color image output from the operating system 13 into a black and white image having a number of gray levels greater than the number of gray levels of the black and white image that can be handled by the operating system 13. And a video card (14C) capable of outputting digital data of the reconverted multi-tone monochrome image, including (16). The ball.

The computer 10C according to the eleventh aspect can be suitably used to implement the multi-tone monochrome image display method according to the first aspect.

According to a twelfth aspect of the present invention, in the computer 10C having the above configuration, the gray scale value of the monochrome image is [x] = 0 to 1023, and the RGB value of the color image is r = 0 to 255 and g = 0. At 255, b = 0 to 255,

 [x] = 0-255,

 x = r × 5/4 + g × 9/4 + b × 2/4

,

 at [x] = 256, r = 63, g = 63, b = 70,

 in [x] = 257-512,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 1

,

 at [x] = 513, r = 127, g = 127, b = 134,

 in [x] = 514-769,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 2

,

 at [x] = 770, r = 191, g = 191, b = 198,

 in [x] = 771-1023,

 x = r × 5/4 + g × 9/4 + b × 2/4 + 3

Provided is a computer 10C characterized by a correspondence of.

The computer 10C according to the twelfth aspect can be suitably used to implement the multi-tone monochrome image display method according to the second aspect.

According to a thirteenth aspect, in the present invention, in the computer 10C having the above configuration, the gray scale value of the black and white image is [x] = 0 to 2047, and the RGB value of the color image is r = 0 to 255 and g = 0. At 255, b = 0 to 255,

 [x] = 0-255,

 x = r × 5/2 + g × 9/2 + b × 2/2

,

 at [x] = 256, r = 33, g = 32, b = 29,

 in [x] = 257-512,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 1

,

 at [x] = 513, r = 65, g = 64, b = 61,

 in [x] = 514-769,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 2

,

 at [x] = 770, r = 97, g = 96, b = 93,

 in [x] = 771-1026,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 3

,

 [x] = 1027, r = 129, g = 128, b = 125,

 in [x] = 1028-1283,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 4

,

 at [x] = 1284, r = 161, g = 160, b = 157,

 in [x] = 1285-1540,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 5

,

 [x] = 1541, r = 193, g = 192, b = 189,

 [x] in = 1542 ~ 1797,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 6

,

 [x] = 1798, r = 224, g = 223, b = 228,

 in [x] = 1799-2047,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 7

Provided is a computer 10C characterized by a correspondence of.

The computer 10C according to the thirteenth aspect can be suitably used to implement the multi-tone monochrome image display method according to the third aspect.

According to a fourteenth aspect, in the present invention, in the computer 10C having the above-described configuration, the monochrome / color conversion means 12 uses the table 1, 1 ', 1 " A computer 10C is provided which converts a gradation value [x] of a monochrome image into RGB values r, g and b of the color image.

In the computer 10C according to the fourteenth aspect, when the tables 1, 1 ', and 1 "are used, high-speed processing is possible, and when a calculation formula is used, the required storage capacity is reduced. If the converting means 12 are constituted by software, implementation becomes easy, and if comprised by hardware, high speed processing is attained.

In a fifteenth aspect, the present invention is the computer 10C having the above configuration, wherein the monochrome / color conversion means 12 is included in the monochrome image output means 11. To provide.

In the computer 10C according to the fifteenth aspect, since the black and white / color conversion means 12 is included in the black and white image output means 11, implementation is easy.

According to a sixteenth aspect, the present invention relates to color / monochrome conversion means 22 for converting an input color image into a multi-gradation monochrome image, and a multi-gradation monochrome image display capable of displaying the converted multi-gradation monochrome image. Means 23, wherein the color / monochrome conversion means 22 has RGB values of color images r = 0 to 255, g = 0 to 255, and b = 0 to 255, when [x] = 0-1023,

 In 0≤r × 5/4 + g × 9/4 + b × 2 / 4≤255,

 [x] = r × 5/4 + g × 9/4 + b × 2/4

With

 At r = 63, g = 63 and b = 70, [x] = 256,

 In 257≤r × 5/4 + g × 9/4 + b × 2/4 + 1≤512,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 1

With

 At r = 127, g = 127 and b = 134, [x] = 513,

 In 514≤r × 5/4 + g × 9/4 + b × 2/4 + 2≤769,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 2

With

 At r = 191, g = 191, b = 198, it is [x] = 770,

 In 771≤r × 5/4 + g × 9/4 + b × 2/4 + 3≤1023,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 3

It provides a black and white display device 20A characterized in that.

The monochrome display device 20A according to the sixteenth aspect can be suitably used to implement the multi-grayscale monochrome image display method according to the second aspect.

According to a seventeenth aspect, the present invention relates to color / monochrome conversion means 22 for converting an input color image into a multi-gradation monochrome image, and a multi-gradation monochrome image display capable of displaying the converted multi-gradation monochrome image. Means 23, wherein the color / monochrome conversion means 22 has RGB values of color images r = 0 to 255, g = 0 to 255, and b = 0 to 255, when [x] = 0 to 2047,

 In 0≤r × 5/2 + g × 9/2 + b × 2 / 2≤255,

 x = r × 5/2 + g × 9/2 + b × 2/2

With

 At r = 33, g = 32 and b = 29, [x] = 256,

 In 257≤r × 5/2 + g × 9/2 + b × 2/2 + 1≤512,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 1

With

 At r = 65, g = 64 and b = 61, [x] = 513,

 In 514≤r × 5/2 + g × 9/2 + b × 2/2 + 2≤769,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 2

With

 At r = 97, g = 96 and b = 93, [x] = 770,

 In 771≤r × 5/2 + g × 9/2 + b × 2/2 + 3≤1026,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 3

With

 When r = 129, g = 128, b = 125, [x] = 1027,

 In 1028≤r × 5/2 + g × 9/2 + b × 2/2 + 4≤1283,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 4

With

 At r = 161, g = 160 and b = 157, [x] = 1284,

 In 1285≤r × 5/2 + g × 9/2 + b × 2/2 + 5≤1540,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 5

With

 At r = 193, g = 192, b = 189, it is [x] = 1541,

 In 1542≤r × 5/2 + g × 9/2 + b × 2/2 + 6≤1797,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 6

With

 At r = 224, g = 223 and b = 228, [x] = 1798,

 In 1799≤r × 5/2 + g × 9/2 + b × 2/2 + 7≤2047,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 7

The black and white display device 20A is provided.

The monochrome display device 20A according to the seventeenth aspect can be suitably used for carrying out the multi-grayscale monochrome image display method according to the third aspect.

In the eighteenth aspect, the present invention provides the color / monochrome conversion means 22 in the black and white display device 20A having the above-described configuration, using the table 1 ', 1 " A monochrome display device (20A) is provided, characterized by converting the RGB values (r, g, b) into the gradation value [x] of the multi-tone monochrome image.

In the black and white display device 20A according to the eighteenth aspect, when the tables 1 'and 1 "are used, high-speed processing is possible, and when a calculation formula is used, the required storage capacity is reduced. If the converting means 22 is constituted by software, implementation becomes easy, and if comprised by hardware, high speed processing is attained.

In a nineteenth aspect, the present invention includes color / monochrome conversion means 42 for converting an input color image into a multi-tone monochrome image and outputting the color / monochrome conversion means 42. When the RGB values are r = 0 to 255, g = 0 to 255, b = 0 to 255, and the gradation value of the black and white image is [x] = 0 to 1023,

 In 0≤r × 5/4 + g × 9/4 + b × 2 / 4≤255,

 [x] = r × 5/4 + g × 9/4 + b × 2/4

With

 At r = 63, g = 63 and b = 70, [x] = 256,

 In 257≤r × 5/4 + g × 9/4 + b × 2/4 + 1≤512,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 1

With

 At r = 127, g = 127 and b = 134, [x] = 513,

 In 514≤r × 5/4 + g × 9/4 + b × 2/4 + 2≤769,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 2

 At r = 191, g = 191, b = 198, it is [x] = 770,

 In 771≤r × 5/4 + g × 9/4 + b × 2/4 + 3≤1023,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 3

It provides a reconversion adapter 40 characterized in that.

The reconversion adapter 40 according to the nineteenth aspect can be suitably used to implement the multi-tone monochrome display method according to the second aspect. And a normal video card and monochrome display apparatus can be used as it is.

In a twentieth aspect, the present invention includes color / monochrome converting means 42 for converting an input color image into a multi-gradation monochrome image and outputting the color / monochrome converting means 42, the RGB of the color image. When the values are r = 0 to 255, g = 0 to 255, b = 0 to 255, and the gradation value of the black and white image is [x] = 0 to 2047,

 In 0≤r × 5/2 + g × 9/2 + b × 2 / 2≤255,

 x = r × 5/2 + g × 9/2 + b × 2/2

With

 At r = 33, g = 32 and b = 29, [x] = 256,

 In 257≤r × 5/2 + g × 9/2 + b × 2/2 + 1≤512,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 1

With

 At r = 65, g = 64 and b = 61, [x] = 513,

 In 514≤r × 5/2 + g × 9/2 + b × 2/2 + 2≤769,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 2

With

 At r = 97, g = 96 and b = 93, [x] = 770,

 In 771≤r × 5/2 + g × 9/2 + b × 2/2 + 3≤1026,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 3

With

 When r = 129, g = 128, b = 125, [x] = 1027,

 In 1028≤r × 5/2 + g × 9/2 + b × 2/2 + 4≤1283,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 4

With

 At r = 161, g = 160 and b = 157, [x] = 1284,

 In 1285≤r × 5/2 + g × 9/2 + b × 2/2 + 5≤1540,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 5

With

 At r = 193, g = 192, b = 189, it is [x] = 1541,

 In 1542≤r × 5/2 + g × 9/2 + b × 2/2 + 6≤1797,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 6

With

 At r = 224, g = 223 and b = 228, [x] = 1798,

 In 1799≤r × 5/2 + g × 9/2 + b × 2/2 + 7≤2047,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 7

It provides a reconversion adapter 40 characterized in that.

The reconversion adapter 40 according to the twentieth aspect can be suitably used to implement the multi-tone monochrome display method according to the third aspect. And a normal video card and monochrome display apparatus can be used as it is.

In the twenty-first aspect of the present invention, in the reconversion adapter 40 having the above-described configuration, the color / monochrome conversion means 42 uses the table 1 ', 1 " A reconversion adapter 40 is provided which converts the RGB values (r, g, b) into the gradation value [x] of the multi-tone monochrome image.

In the reconversion adapter 40 according to the twenty-first aspect, when the tables 1 'and 1 "are used, high-speed processing is possible, and when a calculation formula is used, the required storage capacity is reduced. If the conversion means 42 is constituted by software, implementation becomes easy, and if comprised by hardware, high speed processing is attained.

In a twenty-second aspect, the present invention provides a color / monochrome conversion for converting a color image output from the operating system 13 into a monochrome image having a larger number of gray levels than that of the black and white image that can be handled by the operating system 13. And a means 16 for outputting digital data of the converted multi-tone monochrome image.

The video card 14C according to the twenty-second aspect can be suitably used to implement the multi-tone monochrome image display method according to the first aspect. And a normal monochrome display device can be used as it is.

According to a twenty-third aspect of the present invention, in the video card 14C having the above-described configuration, the color / monochrome conversion means 16 has an RGB value of a color image of r = 0 to 255, g = 0 to 255, b = 0 to 255, and the grayscale value of the black and white image is [x] = 0 to 1023,

 In 0≤r × 5/4 + g × 9/4 + b × 2 / 4≤255,

 [x] = r × 5/4 + g × 9/4 + b × 2/4

When r = 63, g = 63 and b = 70, [x] = 256,

 In 257≤r × 5/4 + g × 9/4 + b × 2/4 + 1≤512,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 1

With

 At r = 127, g = 127 and b = 134, [x] = 513,

 In 514≤r × 5/4 + g × 9/4 + b × 2/4 + 2≤769,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 2

With

 At r = 191, g = 191, b = 198, it is [x] = 770,

 In 771≤r × 5/4 + g × 9/4 + b × 2/4 + 3≤1023,

 [x] = r × 5/4 + g × 9/4 + b × 2/4 + 3

A video card 14C is provided.

The video card 14C according to the twenty-third aspect can be suitably used to implement the multi-tone monochrome image display method according to the second aspect. And a normal monochrome display device can be used as it is.

According to a twenty-fourth aspect of the present invention, in the video card 14C having the above configuration, the color / monochrome conversion means 16 has an RGB value of a color image of r = 0 to 255, g = 0 to 255, b = 0 to 255, and the grayscale value of the black and white image is [x] = 0 to 2047,

 In 0≤r × 5/2 + g × 9/2 + b × 2 / 2≤255,

 x = r × 5/2 + g × 9/2 + b × 2/2

With

 At r = 33, g = 32 and b = 29, [x] = 256,

 In 257≤r × 5/2 + g × 9/2 + b × 2/2 + 1≤512,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 1

With

 At r = 65, g = 64 and b = 61, [x] = 513,

 In 514≤r × 5/2 + g × 9/2 + b × 2/2 + 2≤769,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 2

With

 At r = 97, g = 96 and b = 93, [x] = 770,

 In 771≤r × 5/2 + g × 9/2 + b × 2/2 + 3≤1026,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 3

With

 When r = 129, g = 128, b = 125, [x] = 1027,

 In 1028≤r × 5/2 + g × 9/2 + b × 2/2 + 4≤1283,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 4

With

 At r = 161, g = 160 and b = 157, [x] = 1284,

 In 1285≤r × 5/2 + g × 9/2 + b × 2/2 + 5≤1540,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 5

With

 At r = 193, g = 192, b = 189, it is [x] = 1541,

 In 1542≤r × 5/2 + g × 9/2 + b × 2/2 + 6≤1797,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 6

With

 At r = 224, g = 223 and b = 228, [x] = 1798,

 In 1799≤r × 5/2 + g × 9/2 + b × 2/2 + 7≤2047,

 x = r × 5/2 + g × 9/2 + b × 2/2 + 7

A video card 14C is provided.

The video card 14C according to the twenty-fourth aspect can be suitably used for carrying out the multi-tone monochrome display method according to the third aspect. And a normal monochrome display device can be used as it is.

According to a twenty-fifth aspect of the present invention, in the video card 14C having the above-described configuration, the color / monochrome conversion means 16 uses the table 1, 1 ', 1 " A video card 140 is provided which is software or hardware for converting an RGB value (r, g, b) of an image into a gradation value [x] of the multi-tone monochrome image.

In the video card 14C according to the twenty-fifth aspect, when the tables 1, 1 ', and 1 "are used, high-speed processing is possible, and when a calculation formula is used, necessary storage capacity is reduced. If the monochrome conversion means 16 is constituted by software, implementation will become easy, and if comprised by hardware, a high speed process will be attained.

FIG. 1 is a block diagram showing the multi-gradation monochrome image display apparatus 100A according to the first embodiment.

FIG. 2 is an exemplary diagram showing a black and white / color conversion table 1 according to the first embodiment.

3 is an exemplary diagram illustrating a state in which an application window is opened in a partial area of a desktop screen.

4 is an exemplary diagram showing a black and white / color conversion table 1 'according to the second embodiment.

FIG. 5 is an exemplary diagram showing a black and white / color correspondence table 2 created to create a black and white / color conversion table 1 'according to the second embodiment.

6 is an exemplary diagram showing a black and white / color conversion table 1 "according to the third embodiment.

FIG. 7 is an exemplary diagram showing a black and white / color correspondence table 3 created to create a black and white / color conversion table 1 "according to the third embodiment.

FIG. 8 is a block diagram showing the multi-gradation monochrome image display device 100B according to the fourth embodiment.

9 is a block diagram showing the multi-gradation monochrome image display device 100C according to the fifth embodiment.

(Marking of the main parts of the drawing)

10A: Computer 11: Black and White Image Output Software

12: monochrome / color conversion software 13: operating system

14: video card 20A: monochrome display device

22: color / monochrome conversion processing unit 23: multi gradation black and white image display unit

100A: Multi-Gray Monochrome Image Display

EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated further in detail by embodiment shown in drawing. In addition, this invention is not limited by this.

(First embodiment)

As shown in FIG. 1, the multi-gradation monochrome image display apparatus 100A includes a computer 10A and a monochrome display apparatus 20A.

The computer 10A is a personal computer, for example, and the operating system 13 in which the number of colors of the color image is greater than the gradation of the monochrome image and the number of gradations of the monochrome image that can be handled by the operating system 13 are greater. The gray level value [x] of the multi-grayscale black-and-white image output by the black-and-white image output software 11 which can output the grayscale value [x] of the black-and-white image of the gray level number, and the black-and-white image output software 11 is RGB value of a color image and a video card 14 capable of outputting digital data of a color image output from the operating system 13 and a monochrome / color conversion software 12 for converting to (r, g, b).

In addition, when the operating system 13 is, for example, Windows XP, the number of colors of the color image is 16,777,216 (3x8 bits), and the number of gray levels of the monochrome image is 256 (8 bits).

The monochrome image output software 11 can handle monochrome images of 10-bit gradation.

The monochrome / color conversion software 12 uses the monochrome / color conversion table 1 shown in FIG. 2, for example, to convert the gray level value [x] = 0 to 1023 of the monochrome image of 10-bit grayscale into 3x8. Converts the RGB values of bits (r, g, b) = (0, 0, 0) to (255, 255, 255). However, as can be seen from Fig. 2, the gradation values [x] = 1020 to 1023 are all converted into RGB values (r, g, b) = (255, 255, 255). Therefore, the number of gradations of the actual black-and-white image is 1021.

Video card 14 is a conventional video card.

The monochrome display device 20A displays a color / monochrome conversion processor 22 for converting an input color image into a multi-grayscale monochrome image (for example, 10 bits) and a multi-gradation monochrome image (for example, 10 bits). The multi-gradation black-and-white image display part 23 which can be provided is provided.

The color / monochrome conversion processing unit 22 uses 3x8-bit RGB values (r, g, b, for example) by using a reconversion table in which the black / color conversion table 1 shown in FIG. 2 is inverted. ) = (0, 0, 0) to (255, 255, 255) are converted into gradation values [x] = 0 to 1020 of a monochrome image of 10-bit gradation. RGB values (r, g, b) = (255, 255, 255) are converted into gradation values [x] = 1020. That is, as described above, the number of gray levels of the displayed monochrome image is 1021.

According to the multi-gradation monochrome image display apparatus 100A according to the first embodiment, the multi-gradation (e.g., 256 gradations) exceeding the limitation (for example, 256 gradations) of the operating system 13 is not applied to the hardware or software. For example, a black and white image can be displayed at 1021 gradation. In addition, an ordinary video card 14 can be used.

Here, as shown in FIG. 3, the operating system 13 is Windows XP, for example, and the application window A for displaying the image which the monochrome image output software 11 outputs is shown on the desktop screen D. As shown in FIG. Assuming a state of being open in a part of the area, the screen in which the application window A becomes a black and white / color converted color image and the application window A outside the application window A becomes a color image of the desktop screen D is a computer 10A. Is output to the monochrome display device 20A. As a result, the multi-gradation monochrome image output by the monochrome image output software 11 is displayed in the application window A, but outside the application window A, the desktop screen D output by the operating system 13 is monochrome. The normalized image is displayed.

By the way, the monochrome / color conversion table 1 shown in FIG. 2 can be created with the following program.

 for (UINT r = 0; r <M; ++ r) {

  for (UINT g = 0; g <M; ++ g) {

    for (UINT b = 0; b <M; ++ b) {

    UINT x = (r * R_PARAM + g * G_PARAM + b * B_PARAM)

* K;

      lut [x] = RGB (r, g, b);

   }

  }

}

The program calculates a corresponding gradation value [x] from RGB values (r, g, b) = (0, 0, 0) to (M-1, M-1, M-1). When the same gradation value [x] is obtained from different RGB values (r, g, b), the following RGB values (r, g, b) are employed in the calculation order.

Here, when the monochrome image that can be handled by the operating system 13 is m-bit gradation, and the multi-grayscale monochrome image is k-bit gradation, M is the power of 2 and K is the power of 2 (k-m).

R_PARAM, G_PARAM, and B-PARAM are preferably values derived from values R_PARAM = 0.298911, G_PARAM = 0.5586611, and B_PARAM = 0.1114478 determined by the NTSC system weighted average method for converting color signals into monochrome signals. In the color / monochrome conversion processing unit 22 corresponding to this, when converting the RGB values (r, g, b) from the grayscale value [x], the color / monochrome conversion determined by the NTSC-based weighted average method is performed. This is because the normal application software can view the color image output through the operating system 13 or the color image output by the operating system 13 itself as a natural black and white image on the monochrome display device 20A. . Also, even when the monochrome display device 20A is connected to a normal computer, the color image output by the ordinary computer can be viewed as a natural monochrome image on the monochrome display device 20A.

In the monochrome / color conversion table 1 shown in Fig. 2, m = 8, k = 10, 4 bits are allocated to R_PARAM, G_PARAM, and B_PARAM for convenience of calculation, and R_PARAM = 5/16, G_PARAM = 9/16, and B_PARAM. The value calculated as = 2/16. In addition, about [x] = 1021-1023, RGB value (r, g, b) = (255, 255, 255).

(Second embodiment)

The second embodiment is basically the same as the first embodiment except that the operations of the monochrome / color conversion software 12 and the color / monochrome conversion processing unit 22 are different.

The monochrome / color conversion software 12 uses the monochrome / color conversion table 1 'shown in Fig. 4, for example, to 3x the grayscale value [x] = 0 to 1023 of the monochrome image of 10-bit grayscale. Convert to 8-bit RGB values (r, g, b) = (0, 0, 0) to (255, 255, 255).

As can be seen from Fig. 4, the gradation value [x] = 0 to 1023 is converted into other RGB values (r, g, b). Therefore, the number of gray levels of the monochrome image is 1024.

The color / monochrome conversion processing unit 22 uses 3x8-bit RGB values r, g, using a reconversion table that is the inverse of the monochrome / color conversion table 1 'shown in Fig. 4, for example. b) = (0, 0, 0) to (255, 255, 255) are converted into gradation values [x] = 0 to 1023 of a monochrome image of 10-bit gradation. Therefore, the number of gradations of the displayed monochrome image is 1024.

According to the multi-gradation monochrome image display apparatus 100A according to the second embodiment, the multi-gradation (e.g., 256 gradations) exceeding the limitation (for example, 256 gradations) of the operating system 13 is not applied to the hardware or software. For example, a 1024 gray scale image can be displayed. In addition, an ordinary video card 14 can be used.

By the way, the monochrome / color conversion table 1 'shown in FIG. 4 can be created with the following procedure.

Step 1: The RGB values (r, g, b) corresponding to the gradation values [x] = 0 to 1020 are determined so as to satisfy the following equation. However, select values of r, g, and b that do not have a decimal point on the right side.

 x = (r * 5/16 + g * 9/16 + b * 2/16) * 4

The black-and-white / color conversion table 2 of FIG. 5 shows RGB values (r, g, b) corresponding to the determined gradation values [x] = 0-1020.

Step 2: RGB values (r, g, b) corresponding to gradation values [x] = 768 to 1020 are matched to gradation values [x] = 771 to 1023.

Step 3: RGB values (r, g, b) corresponding to gradation values [x] = 512 to 767 correspond to gradation values [x] = 514 to 769.

Step 4: RGB values (r, g, b) corresponding to gradation values [x] = 256 to 511 are corresponded to gradation values [x] = 257 to 512.

Step 5: The RGB values (r, g, b) corresponding to the gradation values [x] = 0 to 255 are matched to the gradation values [x] = 0 to 255.

Step 6: RGB value which becomes a value between gradation value [x] = 255 and gradation value [x] = 256 in gradation value [x] = 256 in the expression shown in step 1, for example (63, 63, 70) To match.

Step 7: An RGB value that becomes a value between gradation value [x] = 511 and gradation value [x] = 512 in the expression shown in step 1 at gradation value [x] = 513, for example, RGB values (127, 127, 134).

Step 8: An RGB value which becomes a value between the gradation value [x] = 767 and the gradation value [x] = 768 in the expression value [x] = 770 in the formula shown in step 1, for example, the RGB values 191, 191, 198).

As described above, the monochrome / color conversion table 1 'of FIG. 4 can be obtained, but since the color / monochrome conversion determined by the NTSC-based weighted average method is performed, normal application software is output via the operating system 13. The color image or the color image output by the operating system 13 itself can be viewed as a natural monochrome image on the monochrome display device 20A. Further, even when the monochrome display device 20A is connected to a normal computer, the color image output by the ordinary computer can be viewed as a natural monochrome image on the monochrome display device 20A.

(Third embodiment)

The third embodiment is the same as the second embodiment except that the monochrome image becomes 11-bit gradation and the multi-grayscale monochrome image display unit 23 can display an 11-bit multi-gradation monochrome image. Basically the same configuration.

The monochrome / color conversion software 12 uses the monochrome / color conversion table 1 "shown in FIG. 6, for example, and the gradation value of the 11-bit grayscale image output by the monochrome image output software 11 is output. [x] Converts 0 to 2047 to 3x8 bit RGB values (r, g, b) = (0, 0, 0) to (255, 255, 255).

As can be seen from Fig. 6, the gradation value [x] = 0 to 2047 is converted into other RGB values (r, g, b). Therefore, the number of gray levels of the black and white image is 2048.

The color / monochrome conversion processing section 22 uses a reconversion table that is the inverse of the monochrome / color conversion table 1 "shown in FIG. 6, for example, and uses 3x8 bit RGB values (r, g, b) = (0, 0, 0) to (255, 255, 255) are converted to the gradation value [x] = 0 to 2047 of the black and white image of 11-bit gradation. Becomes

According to the multi-gradation monochrome image display apparatus 100A according to the third embodiment, multi-gradation (e.g., 256 gradations) exceeding the limitation (for example, 256 gradations) of the operating system 13 is not applied without major changes to hardware or software. 2048 grayscale) to display a black and white image. In addition, an ordinary video card 14 can be used.

By the way, the monochrome / color conversion table 1 "shown in FIG. 6 can be created with the following procedure.

Step 1: The RGB values (r, g, b) corresponding to the gradation values [x] = 0 to 2040 are determined so as to satisfy the following equation. However, select values of r, g, and b that do not have a decimal point on the right side.

 x = (r * 5/16 + g * 9/16 + b * 2/16) * 8

The black-and-white / color correspondence table 3 of FIG. 7 shows RGB values (r, g, b) corresponding to the determined gradation value [x] = 0-2040.

Step 2: The RGB values (r, g, b) corresponding to the gradation value [x] = 1792 to 2040 are corresponded to the gradation value [x] = 1799 to 2047.

Step 3: RGB values (r, g, b) corresponding to gradation values [x] = 1536 to 1791 correspond to gradation values [x] = 1542 to 1797.

Step 4: RGB values (r, g, b) corresponding to gradation values [x] = 1280 to 1535 correspond to gradation values [x] = 1285 to 1540.

Step 5: RGB values (r, g, b) corresponding to gradation values [x] = 1024 to 1279 are corresponded to gradation values [x] = 1028 to 1283.

Step 6: RGB values (r, g, b) corresponding to gradation values [x] = 768 to 1023 are made to correspond to gradation values [x] = 771 to 1026.

Step 7: The RGB values (r, g, b) corresponding to the gray scale values [x] = 512 to 767 correspond to the gray scale values [x] = 514 to 769.

Step 8: The RGB values (r, g, b) corresponding to the gray scale values [x] = 256 to 511 are matched to the gray scale values [x] = 257 to 512.

Step 9: The RGB values (r, g, b) corresponding to the gradation values [x] = 0 to 255 are matched to the gradation values [x] = 0 to 255.

Step 10: RGB value which becomes a value between gradation value [x] = 255 and gradation value [x] = 256 in gradation value [x] = 256 in the equation shown in step 1, for example, RGB values (33, 32, 29).

Step 11: An RGB value which becomes a value between the gradation value [x] = 511 and the gradation value [x] = 512 in the expression value [x] = 513 in the formula shown in step 1, for example, the RGB values (65, 64, 61).

Step 12: In the gradation value [x] = 770, the RGB value which becomes a value between the gradation value [x] = 767 and the measurement action [x] = 768 in the expression shown in step 1, for example, the RGB value (97, 96). , 93).

Step 13: An RGB value which becomes a value between the gradation value [x] = 1023 and the gradation value [x] = 1024 in the expression shown in step 1 at the gradation value [x] = 1027, for example, the RGB values (129, 128, 125).

Step 14: In the gradation value [x] = 1284, the RGB value which becomes a value between the gradation value [x] = 1279 and the gradation value [x] = 1280 in the equation shown in step 1, for example, the RGB values (161, 160, 157).

Step 15: In the gradation value [x] = 1541, the RGB value which becomes a value between the gradation value [x] = 1535 and the gradation value [x] = 1536 in the equation shown in step 1, for example, the RGB value (193, 192). 189).

Step 16: In the gradation value [x] = 1798, the RGB value which becomes a value between the gradation value [x] = 1791 and the gradation value [x] = 1792 in the equation shown in step 1, for example, the RGB values (224, 223, 228).

As mentioned above, although the monochrome / color conversion table 1 "of FIG. 6 can be obtained, since the color / monochrome conversion determined by NTSC system weighted average method is performed, normal application software outputs via the operating system 13 The color image to be displayed and the color image output by the operating system 13 itself can be viewed as a natural black and white image on the monochrome display device 20A. Moreover, even when the monochrome display device 20A is connected to a normal computer, The color image output from the computer can be viewed as a natural black and white image by the black and white display device 20A.

(Fourth embodiment)

As illustrated in FIG. 8, the multi-gradation monochrome image display device 100B includes a computer 10A, a reconversion adapter 40, and a monochrome display device 20.

The computer 10A is the structure demonstrated in 1st-3rd embodiment.

The reconversion adapter 40 is provided with the color / monochrome conversion processing part 42 which converts an input color image into a multi-tone monochrome image, and outputs it.

The color / black-and-white conversion process part 42 is the same structure as the color / black-and-white conversion process part 22 demonstrated by 1st-3rd embodiment.

The black-and-white display device 20 is a normal black-and-white display device, and is equipped with the multi-gradation black-and-white image display part 23 which can display the black-and-white image of 10-bit gradation or 11-bit gradation, for example.

According to the multi-gradation monochrome image display device 100B according to the fourth embodiment, a multi-gradation (e.g., 256 gradations) exceeding the limitation (for example, 256 gradations) of the operating system 13 is not applied to the hardware or software. For example, a black and white image can be displayed at 1021 grayscale, 1024 grayscale, or 2048 grayscale. In addition, an ordinary video card 14 or monochrome display device 20 can be used.

(5th embodiment)

As shown in FIG. 9, the multi-gradation monochrome image display device 100C includes a computer 10C, a monochrome display device 20, and a color display device 30.

The computer 10C is a configuration using the video card 14C instead of the video card 14 of the computer 10A described in the first to third embodiments.

The video card 14C includes a color / monochrome conversion processor 16 for converting a color image input from the operating system 13 into a multi-tone monochrome image and outputting the RGB value of the color image input from the operating system 13. The connector 17 which outputs (r, g, b) as it is is provided. The color / monochrome conversion processing unit 16 has the same configuration as the color / monochrome conversion processing unit 22 described in the first to third embodiments.

The black-and-white display device 20 is a normal black-and-white display device, and is equipped with the multi-gradation black-and-white image display part 23 which can display the black-and-white image of 10-bit gradation or 11-bit gradation, for example.

The color display apparatus 30 is a normal color display apparatus, and is provided with the color image display part 31 which can display the color image which branched off from the reconversion adapter 40, and is input as it is.

According to the multi-gradation monochrome image display device 100C according to the fifth embodiment, a multi-gradation (e.g., 256 gradations) exceeding the limitation (for example, 256 gradations) of the operating system 13 is not applied to the hardware or software. For example, a black and white image can be displayed in 1021 gray scale, 1024 gray scale, or 2048 gray scale. In addition, an ordinary black and white display device can be used.

(Other embodiment)

(1) In the program described in the first embodiment, when calculating m = 8 and k = 11, for example, a monochrome image capable of converting an 11-bit grayscale image into a color image of 3x8-bit color number Create a color conversion table. It is also possible to create a reconversion table from the monochrome / color conversion table.

(2) In the program described in the first embodiment, for example, 5 bits are allocated to m = 8, k = 12, R_PARAM, G_PARAM, and B_PARAM, and R_PARAM = 10/32, G_PARAM = 20/32, and B_PARAM. When calculated as = 2/32, a black and white / color conversion table capable of converting a black and white image having a 12-bit gradation into a color image having a color index of 3x8 bits can be created. It is also possible to create a reconversion table from the monochrome / color conversion table.

(3) Instead of using the monochrome / color conversion table, the tone value [x] of the multi-tone monochrome image may be converted into the RGB values (r, g, b) of the color image by arithmetic expression. In addition, instead of using the reconversion table, the RGB values (r, g, b) of the color image may be converted into the gradation value [x] of the multi-tone monochrome image by a calculation formula.

(4) The monochrome image output software 11 or the monochrome / color conversion software 12 may be configured by hardware.

(5) The color / monochrome conversion units 22, 42, and 16 may be configured by software or may be configured by hardware.

According to the multi-gradation monochrome image display method of the present invention, the multi-gradation monochrome image display apparatus, a computer, a monochrome display apparatus, a reconversion adapter, and a video card, the multi-gradation beyond the limitation of the operating system without making any major changes in hardware or software A black and white image can be displayed. In particular, a personal computer using Windows as an operating system is useful for processing, for example, medical black and white images having a gradation of 10 bits or more and displaying the multi-gradation black and white images.

Claims (31)

Into the operating system 13 in which the number of colors of the color image is greater than that of the black and white image, a black and white image having more gray levels than the gray number of the black and white image handled by the operating system 13 is converted into a color image and inputted. And converting the color image output from the operating system 13 into a monochrome image having a larger number of gray levels than that of the monochrome image that can be handled by the operating system 13, and displaying the color image. . The method of claim 1, When the gradation value of a black and white image is [x] = 0 to 1023, and the RGB values of a color image are r = 0 to 255, g = 0 to 255, and b = 0 to 255,  [x] = 0-255,  x = r × 5/4 + g × 9/4 + b × 2/4 ,  at [x] = 256, r = 63, g = 63, b = 70,  in [x] = 257-512,  x = r × 5/4 + g × 9/4 + b × 2/4 + 1 ,  at [x] = 513, r = 127, g = 127, b = 134,  in [x] = 514-769,  x = r × 5/4 + g × 9/4 + b × 2/4 + 2 ,  at [x] = 770, r = 191, g = 191, b = 198,  in [x] = 771-1023,  x = r × 5/4 + g × 9/4 + b × 2/4 + 3 Multi-grayscale black and white image display method characterized in that there is. The method of claim 1, When the gray scale value of the black and white image is [x] = 0 to 2047, and the RGB values of the color image are r = 0 to 255, g = 0 to 255, and b = 0 to 255,  [x] = 0-255,  x = r × 5/2 + g × 9/2 + b × 2/2 ,  at [x] = 256, r = 33, g = 32, b = 29,  in [x] = 257-512,  x = r × 5/2 + g × 9/2 + b × 2/2 + 1 ,  at [x] = 513, r = 65, g = 64, b = 61,  in [x] = 514-769,  x = r × 5/2 + g × 9/2 + b × 2/2 + 2 ,  at [x] = 770, r = 97, g = 96, b = 93,  in [x] = 771-1026,  x = r × 5/2 + g × 9/2 + b × 2/2 + 3 ,  [x] = 1027, r = 129, g = 128, b = 125,  in [x] = 1028-1283,  x = r × 5/2 + g × 9/2 + b × 2/2 + 4 ,  at [x] = 1284, r = 161, g = 160, b = 157,  in [x] = 1285-1540,  x = r × 5/2 + g × 9/2 + b × 2/2 + 5 ,  [x] = 1541, r = 193, g = 192, b = 189,  [x] in = 1542 ~ 1797,  x = r × 5/2 + g × 9/2 + b × 2/2 + 6 ,  [x] = 1798, r = 224, g = 223, b = 228,  in [x] = 1799-2047,  x = r × 5/2 + g × 9/2 + b × 2/2 + 7 Multi-grayscale black and white image display method characterized in that there is. Equipped with a computer 10A and a monochrome display device 20A, The computer 10A includes an operating system 13 in which the number of colors of the color image is greater than the gradation number of the black and white image, and a monochrome image of more gradations than the gradation number of the monochrome image that can be handled by the operating system 13. A black and white image output means 11 capable of outputting a black and white / color conversion means for converting a multi-tone monochrome image output by the black and white image output means 11 into a color image and inputting it to the operating system 13 ( 12) and a video card 14 capable of outputting digital data of a color image output from the operating system 13, The monochrome display device 20A reconverts the color image output from the video card 14 into a monochrome image having a gradation number larger than that of the monochrome image that can be handled by the operating system 13. And a multi-tone monochrome image display means (23) capable of displaying the black-and-white conversion means (22) and said reconverted multi-tone monochrome image. A computer 10A, a reconversion adapter 40, and a monochrome display device 20, The computer 10A includes an operating system 13 in which the number of colors of the color image is greater than the gradation number of the black and white image, and a monochrome image of more gradations than the gradation number of the monochrome image that can be handled by the operating system 13. A black and white image output means 11 capable of outputting a black and white / color conversion means for converting a multi-tone monochrome image output by the black and white image output means 11 into a color image and inputting it to the operating system 13 ( 12) and a video card 14 capable of outputting digital data of a color image output from the operating system 13, The reconversion adapter 40 reconverts the color image output from the video card 14 into a black and white image having a number of gray levels greater than that of the black and white image that can be handled by the operating system 13. Equipped with black and white conversion means 42, The monochrome display device 20 includes a multi-grayscale monochrome image display means 23 capable of displaying a multi-grayscale monochrome image input from the reconversion adapter 40. (100B). Equipped with a computer 10C and a monochrome display device 20, The computer 10C includes an operating system 13 in which the number of colors of the color image is greater than the gradation number of the black and white image, and a monochrome image of more gradations than the gradation number of the monochrome image that can be handled by the operating system 13. A black and white image output means 11 capable of outputting a black and white / color conversion means for converting a multi-tone monochrome image output by the black and white image output means 11 into a color image and inputting it to the operating system 13 ( 12) and color / monochrome converting means 16 for reconverting the color image output from the operating system 13 into a monochrome image having a greater number of gradations than that of the monochrome image that can be handled by the operating system 13. And a video card 14C capable of outputting digital data of the reconverted multi-tone monochrome image, The monochrome display device 20 includes a multi-tone monochrome image display means 23 capable of displaying a multi-tone monochrome image output from the video card 14C. 100C). The method according to any one of claims 4 to 6, When the gradation value of a black and white image is [x] = 0 to 1023, and the RGB values of a color image are r = 0 to 255, g = 0 to 255, and b = 0 to 255,  [x] = 0-255,  x = r × 5/4 + g × 9/4 + b × 2/4 ,  at [x] = 256, r = 63, g = 63, b = 70,  in [x] = 257-512,  x = r × 5/4 + g × 9/4 + b × 2/4 + 1 ,  at [x] = 513, r = 127, g = 127, b = 134,  in [x] = 514-769,  x = r × 5/4 + g × 9/4 + b × 2/4 + 2 ,  at [x] = 770, r = 191, g = 191, b = 198,  in [x] = 771-1023,  x = r × 5/4 + g × 9/4 + b × 2/4 + 3 Multi-grayscale black and white image display device, characterized in that the corresponding. The method according to any one of claims 4 to 6, When the gray scale value of the black and white image is [x] = 0 to 2047, and the RGB values of the color image are r = 0 to 255, g = 0 to 255, and b = 0 to 255,  [x] = 0-255,  x = r × 5/2 + g × 9/2 + b × 2/2 ,  at [x] = 256, r = 33, g = 32, b = 29,  in [x] = 257-512,  x = r × 5/2 + g × 9/2 + b × 2/2 + 1 ,  at [x] = 513, r = 65, g = 64, b = 61,  in [x] = 514-769,  x = r × 5/2 + g × 9/2 + b × 2/2 + 2 ,  at [x] = 770, r = 97, g = 96, b = 93,  in [x] = 771-1026,  x = r × 5/2 + g × 9/2 + b × 2/2 + 3 ,  [x] = 1027, r = 129, g = 128, b = 125,  in [x] = 1028-1283,  x = r × 5/2 + g × 9/2 + b × 2/2 + 4 ,  at [x] = 1284, r = 161, g = 160, b = 157,  in [x] = 1285-1540,  x = r × 5/2 + g × 9/2 + b × 2/2 + 5 ,  [x] = 1541, r = 193, g = 192, b = 189,  [x] in = 1542 ~ 1797,  x = r × 5/2 + g × 9/2 + b × 2/2 + 6 ,  [x] = 1798, r = 224, g = 223, b = 228,  in [x] = 1799-2047,  x = r × 5/2 + g × 9/2 + b × 2/2 + 7 Multi-grayscale black and white image display device, characterized in that the corresponding. The method according to any one of claims 4 to 6, The monochrome / color conversion means 12 converts the gray level value [x] of the multi-grayscale black-and-white image by using a table (1, 1 ', 1 ") or a formula to the RGB values (r, g, b) a multi-gradation monochrome image display device, characterized by converting to b). The method according to any one of claims 4 to 6, The monochrome / color conversion means (12) is included in the monochrome image output means (11). An operating system 13 in which the number of colors of the color image is greater than the gradation number of the black and white image, and a black and white image capable of outputting a monochrome image of more gradations than the gradation number of the monochrome image handled by the operating system 13. An output means 11, a monochrome / color conversion means 12 for converting a multi-tone monochrome image output by the monochrome image output means 11 into a color image and inputting it to the operating system 13; and the operating system And color / monochrome conversion means 16 for reconverting the color image output from (13) into a monochrome image having a number of gradations greater than that of the monochrome image that can be handled by the operating system 13; A computer (10C) comprising a video card (14C) capable of outputting digital data of a reconverted multi-tone monochrome image. The method of claim 11, When the gradation value of a black and white image is [x] = 0 to 1023, and the RGB values of a color image are r = 0 to 255, g = 0 to 255, and b = 0 to 255,  [x] = 0-255,  x = r × 5/4 + g × 9/4 + b × 2/4 ,  at [x] = 256, r = 63, g = 63, b = 70,  in [x] = 257-512,  x = r × 5/4 + g × 9/4 + b × 2/4 + 1 ,  at [x] = 513, r = 127, g = 127, b = 134,  in [x] = 514-769,  x = r × 5/4 + g × 9/4 + b × 2/4 + 2 ,  at [x] = 770, r = 191, g = 191, b = 198,  in [x] = 771-1023,  x = r × 5/4 + g × 9/4 + b × 2/4 + 3 Computer 10C, characterized in that there is a correspondence of. The method of claim 11, When the gray scale value of the black and white image is [x] = 0 to 2047, and the RGB values of the color image are r = 0 to 255, g = 0 to 255, and b = 0 to 255,  [x] = 0-255,  x = r × 5/2 + g × 9/2 + b × 2/2 ,  at [x] = 256, r = 33, g = 32, b = 29,  in [x] = 257-512,  x = r × 5/2 + g × 9/2 + b × 2/2 + 1 ,  at [x] = 513, r = 65, g = 64, b = 61,  in [x] = 514-769,  x = r × 5/2 + g × 9/2 + b × 2/2 + 2 ,  at [x] = 770, r = 97, g = 96, b = 93,  in [x] = 771-1026,  x = r × 5/2 + g × 9/2 + b × 2/2 + 3 ,  [x] = 1027, r = 129, g = 128, b = 125,  in [x] = 1028-1283,  x = r × 5/2 + g × 9/2 + b × 2/2 + 4 ,  at [x] = 1284, r = 161, g = 160, b = 157,  in [x] = 1285-1540,  x = r × 5/2 + g × 9/2 + b × 2/2 + 5 ,  [x] = 1541, r = 193, g = 192, b = 189,  [x] in = 1542 ~ 1797,  x = r × 5/2 + g × 9/2 + b × 2/2 + 6 ,  [x] = 1798, r = 224, g = 223, b = 228,  in [x] = 1799-2047,  x = r × 5/2 + g × 9/2 + b × 2/2 + 7 Computer 10C, characterized in that there is a correspondence of. The method according to any one of claims 11 to 13, The monochrome / color conversion means 12 converts the gray level value [x] of the multi-grayscale black-and-white image by using a table (1, 1 ', 1 ") or a formula to the RGB values (r, g, b) a computer 10C. The method according to any one of claims 11 to 13, And said monochrome / color conversion means (12) are included in said monochrome image output means (11). A color / monochrome conversion means 22 for converting an input color image into a multi-gradation monochrome image, and multi-gradation monochrome image display means 23 capable of displaying the converted multi-gradation monochrome image; The color / monochrome conversion means 22 has RGB values of color images r = 0 to 255, g = 0 to 255, and b = 0 to 255, and the grayscale values of the monochrome images are [x] = 0 to 1023 days. time,  In 0≤r × 5/4 + g × 9/4 + b × 2 / 4≤255,  [x] = r × 5/4 + g × 9/4 + b × 2/4 With  At r = 63, g = 63 and b = 70, [x] = 256,  In 257≤r × 5/4 + g × 9/4 + b × 2/4 + 1≤512,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 1 With  At r = 127, g = 127 and b = 134, [x] = 513,  In 514≤r × 5/4 + g × 9/4 + b × 2/4 + 2≤769,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 2 With  At r = 191, g = 191, b = 198, it is [x] = 770,  In 771≤r × 5/4 + g × 9/4 + b × 2/4 + 3≤1023,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 3 The black and white display device 20A, characterized in that. A color / monochrome conversion means 22 for converting an input color image into a multi-gradation monochrome image, and multi-gradation monochrome image display means 23 capable of displaying the converted multi-gradation monochrome image; The color / monochrome conversion means 22 has RGB values of color images r = 0 to 255, g = 0 to 255, and b = 0 to 255, and the gray scale values of the monochrome images are [x] = 0 to 2047 days. time, In 0≤r × 5/2 + g × 9/2 + b × 2 / 2≤255,  x = r × 5/2 + g × 9/2 + b × 2/2 With  At r = 33, g = 32 and b = 29, [x] = 256,  In 257≤r × 5/2 + g × 9/2 + b × 2/2 + 1≤512,  x = r × 5/2 + g × 9/2 + b × 2/2 + 1 With  At r = 65, g = 64 and b = 61, [x] = 513,  In 514≤r × 5/2 + g × 9/2 + b × 2/2 + 2≤769,  x = r × 5/2 + g × 9/2 + b × 2/2 + 2 With  At r = 97, g = 96 and b = 93, [x] = 770,  In 771≤r × 5/2 + g × 9/2 + b × 2/2 + 3≤1026,  x = r × 5/2 + g × 9/2 + b × 2/2 + 3 When r = 129, g = 128, b = 125, [x] = 1027,  In 1028≤r × 5/2 + g × 9/2 + b × 2/2 + 4≤1283,  x = r × 5/2 + g × 9/2 + b × 2/2 + 4 With  At r = 161, g = 160 and b = 157, [x] = 1284,  In 1285≤r × 5/2 + g × 9/2 + b × 2/2 + 5≤1540,  x = r × 5/2 + g × 9/2 + b × 2/2 + 5 With  At r = 193, g = 192, b = 189, it is [x] = 1541,  In 1542≤r × 5/2 + g × 9/2 + b × 2/2 + 6≤1797,  x = r × 5/2 + g × 9/2 + b × 2/2 + 6 With  At r = 224, g = 223 and b = 228, [x] = 1798,  In 1799≤r × 5/2 + g × 9/2 + b × 2/2 + 7≤2047,  x = r × 5/2 + g × 9/2 + b × 2/2 + 7 And a black and white display device 20A. The method according to claim 16 or 17, The color / monochrome converting means 22 converts the RGB values (r, g, b) of the color image into grayscale values of the multi-tone monochrome image using a table (1 ', 1 ") or an expression. And a black and white display device (20A), characterized in that the conversion to. A color / monochrome conversion means 42 for converting the input color image into a multi-gradation monochrome image and outputting the same; The color / monochrome converting means 42 has RGB values of r = 0 to 255, g = 0 to 255, and b = 0 to 255, and the grayscale value of the monochrome image is [x] = 0 to 1023 days. time,  In 0≤r × 5/4 + g × 9/4 + b × 2 / 4≤255,  [x] = r × 5/4 + g × 9/4 + b × 2/4 With  At r = 63, g = 63 and b = 70, [x] = 256,  In 257≤r × 5/4 + g × 9/4 + b × 2/4 + 1≤512,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 1 With  At r = 127, g = 127 and b = 134, [x] = 513,  In 514≤r × 5/4 + g × 9/4 + b × 2/4 + 2≤769,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 2 With  At r = 191, g = 191, b = 198, it is [x] = 770,  In 771≤r × 5/4 + g × 9/4 + b × 2/4 + 3≤1023,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 3 Reconversion adapter 40 characterized in that. A color / monochrome conversion means 42 for converting the input color image into a multi-gradation monochrome image and outputting the same; The color / monochrome conversion means 42 has RGB values of color images r = 0 to 255, g = 0 to 255, and b = 0 to 255, and the gray scale value of the monochrome image is [x] = 0 to 2047 days. time,  In 0≤r × 5/2 + g × 9/2 + b × 2 / 2≤255,  x = r × 5/2 + g × 9/2 + b × 2/2 With  At r = 33, g = 32 and b = 29, [x] = 256,  In 257≤r × 5/2 + g × 9/2 + b × 2/2 + 1≤512,  x = r × 5/2 + g × 9/2 + b × 2/2 + 1 With  At r = 65, g = 64 and b = 61, [x] = 513,  In 514≤r × 5/2 + g × 9/2 + b × 2/2 + 2≤769,  x = r × 5/2 + g × 9/2 + b × 2/2 + 2 At r = 97, g = 96, and b = 93, [x] = 770,  In 771≤r × 5/2 + g × 9/2 + b × 2/2 + 3≤1026,  x = r × 5/2 + g × 9/2 + b × 2/2 + 3 With  When r = 129, g = 128, b = 125, [x] = 1027,  In 1028≤r × 5/2 + g × 9/2 + b × 2/2 + 4≤1283,  x = r × 5/2 + g × 9/2 + b × 2/2 + 4 With  At r = 161, g = 160 and b = 157, [x] = 1284,  In 1285≤r × 5/2 + g × 9/2 + b × 2/2 + 5≤1540,  x = r × 5/2 + g × 9/2 + b × 2/2 + 5 With  At r = 193, g = 192, b = 189, it is [x] = 1541,  In 1542≤r × 5/2 + g × 9/2 + b × 2/2 + 6≤1797,  x = r × 5/2 + g × 9/2 + b × 2/2 + 6 With  At r = 224, g = 223 and b = 228, [x] = 1798,  In 1799≤r × 5/2 + g × 9/2 + b × 2/2 + 7≤2047,  x = r × 5/2 + g × 9/2 + b × 2/2 + 7 Reconversion adapter 40 characterized in that. The method of claim 19 or 20, The color / monochrome converting means 42 converts the RGB values (r, g, b) of the color image by using the tables 1 ', 1' 'or arithmetic formula [x] Reconversion adapter (40), characterized in that for conversion. And a color / monochrome conversion means 16 for converting the color image output from the operating system 13 into a monochrome image having a number of gray levels greater than that of the black and white image that can be handled by the operating system 13; A video card (14C) characterized by being capable of outputting digital data of a converted multi-tone monochrome image. The method of claim 22, The color / monochrome conversion means 16 has RGB values of color images r = 0 to 255, g = 0 to 255, and b = 0 to 255, and the gray scale values of the monochrome image are [x] = 0 to 1023 days. time,  In 0≤r × 5/4 + g × 9/4 + b × 2 / 4≤255,  [x] = r × 5/4 + g × 9/4 + b × 2/4 With  At r = 63, g = 63 and b = 70, [x] = 256,  In 257≤r × 5/4 + g × 9/4 + b × 2/4 + 1≤512,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 1 With  At r = 127, g = 127 and b = 134, [x] = 513,  In 514≤r × 5/4 + g × 9/4 + b × 2/4 + 2≤769,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 2 With  At r = 191, g = 191, b = 198, it is [x] = 770,  In 771≤r × 5/4 + g × 9/4 + b × 2/4 + 3≤1023,  [x] = r × 5/4 + g × 9/4 + b × 2/4 + 3 Video card 14C. The method of claim 22, The color / monochrome conversion means 16 has RGB values of color images r = 0 to 255, g = 0 to 255, and b = 0 to 255, and the gray scale values of the monochrome images are [x] = 0 to 2047 days. time,  In 0≤r × 5/2 + g × 9/2 + b × 2 / 2≤255,  x = r × 5/2 + g × 9/2 + b × 2/2 With  At r = 33, g = 32 and b = 29, [x] = 256,  In 257≤r × 5/2 + g × 9/2 + b × 2/2 + 1≤512,  x = r × 5/2 + g × 9/2 + b × 2/2 + 1 With  At r = 65, g = 64 and b = 61, [x] = 513,  In 514≤r × 5/2 + g × 9/2 + b × 2/2 + 2≤769,  x = r × 5/2 + g × 9/2 + b × 2/2 + 2 With  At r = 97, g = 96 and b = 93, [x] = 770,  In 771≤r × 5/2 + g × 9/2 + b × 2/2 + 3≤1026,  x = r × 5/2 + g × 9/2 + b × 2/2 + 3 With  When r = 129, g = 128, b = 125, [x] = 1027,  In 1028≤r × 5/2 + g × 9/2 + b × 2/2 + 4≤1283,  x = r × 5/2 + g × 9/2 + b × 2/2 + 4 With  At r = 161, g = 160 and b = 157, [x] = 1284,  In 1285≤r × 5/2 + g × 9/2 + b × 2/2 + 5≤1540,  x = r × 5/2 + g × 9/2 + b × 2/2 + 5 With  At r = 193, g = 192, b = 189, it is [x] = 1541,  In 1542≤r × 5/2 + g × 9/2 + b × 2/2 + 6≤1797,  x = r × 5/2 + g × 9/2 + b × 2/2 + 6 With  At r = 224, g = 223 and b = 228, [x] = 1798,  In 1799≤r × 5/2 + g × 9/2 + b × 2/2 + 7≤2047,  x = r × 5/2 + g × 9/2 + b × 2/2 + 7 And a video card 14C. The method according to any one of claims 22 to 24, The color / monochrome converting means 16 converts the RGB values (r, g, b) of the color image by using a table (1, 1 ', 1 ") or a calculation formula [ x] video card 14C. The method of claim 7, wherein The monochrome / color conversion means 12 converts the gray level value [x] of the multi-grayscale black-and-white image by using a table (1, 1 ', 1 ") or a formula to the RGB values (r, g, b) a multi-gradation monochrome image display device, characterized by converting to b). The method of claim 8, The monochrome / color conversion means 12 converts the gray level value [x] of the multi-grayscale black-and-white image by using a table (1, 1 ', 1 ") or a formula to the RGB values (r, g, b) a multi-gradation monochrome image display device, characterized by converting to b). The method of claim 7, wherein The monochrome / color conversion means (12) is included in the monochrome image output means (11). The method of claim 8, The monochrome / color conversion means (12) is included in the monochrome image output means (11). The method of claim 9, The monochrome / color conversion means (12) is included in the monochrome image output means (11). The method of claim 14, And said monochrome / color conversion means (12) are included in said monochrome image output means (11).

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