JP2013257417A - Monochrome image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display a monochrome image corresponding to a color image created by a personal computer mixed with a monochrome image corresponding to a medical image taken by a medical image photographing device on a single screen.SOLUTION: A first monochrome image is displayed in a first region (48a) on a screen of a monochrome image display panel (48) on the basis of first conversion monochrome image data (M) with a pixel value converted in reflection of an image aspect ratio of monochrome image data (A). A second monochrome image is displayed in a second region (48b) on the basis of second conversion monochrome image data (C) with the pixel value converted in reflection of a color of color image data (B). Thus, a monochrome image corresponding to both monochrome image data and color image data can be appropriately displayed even when composing a single screen by mixing both data.

Description

  The present invention relates to a monochrome image display device, and more specifically, even when monochrome image data and color image data are mixed to form one screen, a monochrome image corresponding to both image data can be properly displayed. The present invention relates to a monochrome image display apparatus.

Conventionally, when a monochrome image is displayed by independently driving three subpixels constituting one pixel of a monochrome image display panel in order to improve the resolution, the image aspect ratio due to the anisotropy of the subpixel shape is reduced. A new monochrome image data is obtained by performing aspect ratio conversion processing on the original monochrome image data so as to compensate for the change, and the monochrome image is displayed by independently driving the subpixels based on the new monochrome image data. An image display device is known (see, for example, Patent Document 1).
On the other hand, when color image data is input, the color image data is subjected to color / monochrome conversion processing so that the original color is reflected in luminance, and the subpixels of the monochrome image display panel are obtained based on the obtained monochrome image data. When monochrome image data is input, each of the three sub-pixels constituting one pixel of the monochrome image display panel is driven by the monochrome pixel value of one monochrome pixel to display a monochrome image. A monochrome flat panel display device is known (for example, see Patent Document 2).

Japanese Patent No. 4773522 JP 2003-228337 A

In the image display device according to Patent Document 1, monochrome medical image data acquired by the medical imaging device is subjected to aspect ratio conversion processing by a personal computer to create new monochrome image data, and the monochrome image data is transferred from the personal computer to the monochrome liquid crystal. Input to the display device.
However, there is a problem that cannot be dealt with when color image data and monochrome image data are mixed to form one screen. That is, the R pixel value, the G pixel value, and the B pixel value of the color image data are directly assigned to the sub-pixels, so that the original image cannot be properly expressed in the color image data portion. There was a problem.

  On the other hand, in the monochrome flat panel display device according to Patent Document 2, when it is known whether color image data or monochrome image data is input, the color of the color image data is changed by switching the switch. It was possible to display a properly reflected monochrome image or to display a monochrome image appropriately corresponding to the original monochrome image data. However, there is a problem that cannot be dealt with when color image data and monochrome image data are mixed to form one screen. That is, when the switch is switched for color image data, the monochrome image data portion is also subjected to the color / monochrome conversion process, so that the monochrome image data portion has a luminance different from that of the original monochrome pixel. When the switch is switched for monochrome image data, the color image data portion is not subjected to color / monochrome conversion processing, and the color image data portion has a luminance that cannot express the original color properly. There was a point.

  Accordingly, an object of the present invention is to provide a monochrome image display device capable of properly displaying monochrome images corresponding to both image data even when monochrome image data and color image data are mixed to form a single screen. It is to provide.

In the first aspect, the present invention relates to a monochrome image display panel (48) in which one pixel (U) is composed of three subpixels (u), and one monochrome pixel value is assigned to one pixel. The first area (48a) to display the first monochrome image corresponding to the monochrome image data (A) and the color image data (B) in which R pixel value, G pixel value, and B pixel value are assigned to one pixel. An area dividing means (44) for dividing the screen of the monochrome image display panel (48) into a second area (48b) to display the corresponding second monochrome image, and an image aspect in the monochrome image data (A). A monochrome pixel value assigned to the subpixel (u) is obtained from the monochrome pixel value of the monochrome image data (A) in order to display the first monochrome image reflecting the ratio. First conversion calculation means (44) for obtaining first converted monochrome image data (M) by a spectrum ratio conversion process, and the second monochrome image for displaying the second monochrome image reflecting the color in the color image data (B). Second to obtain second converted monochrome image data (C) by color monochrome conversion processing for obtaining a monochrome pixel value to be assigned to the sub-pixel (u) from the R pixel value, G pixel value, and B pixel value of the color image data (B). The conversion calculation means (44) and the first area (48a) display the first monochrome image based on the first converted monochrome image data (M), and the second area (48b) displays the second conversion. A monochrome image display panel for independently driving the sub-pixel (u) to display the second monochrome image based on the monochrome image data (C) Providing a monochrome image display apparatus (4), characterized by comprising a dynamic means (47).
In the monochrome image display device (4) according to the first aspect, in the first region (48a) on the screen of the monochrome image display panel (48), the first monochrome image is based on the first converted monochrome image data (M). Therefore, the first monochrome image reflecting the image aspect ratio in the monochrome image data (A) can be displayed. On the other hand, since the second monochrome image is displayed based on the second converted monochrome image data (C) in the second region (48b), the second monochrome image reflecting the color in the color image data (B) can be displayed. That is, even when monochrome image data and color image data are mixed to form a single screen, monochrome images corresponding to both image data can be properly displayed.

In a second aspect, the present invention provides the monochrome image display device (4) according to the first aspect, wherein the region dividing means (44) is a region other than the excluded region (48c) in the first region (48a). The R pixel value, G pixel value, and B pixel value of the pixel are set as specific color pixel values, and the monochrome image display panel driving means (47) is configured to select the pixel of the specific color pixel value in the first region (48a). The first monochrome image is displayed based on the first converted monochrome image data (M), and the pixels other than the pixel of the specific color pixel value in the first region (48a) and the second region (48b) are displayed. A monochrome image display device (4) is provided that displays the second monochrome image based on the second converted monochrome image data (C).
In the monochrome image display device (4) according to the second aspect, the corresponding portion of the second converted monochrome image data (C) can be displayed in the excluded area (48c) in the first area (48a). A message related to the first converted monochrome image data (M) can be displayed in the excluded area (48c). Further, if the specific color pixel value is set to a color pixel value different from the color pixel value of the mouse cursor, the first converted monochrome image data (M) is displayed when the mouse cursor enters the first area (48a). The mouse cursor can be displayed in the first area (48a) without being erased.

In a third aspect, the present invention provides the monochrome image display device (4) according to the first or second aspect, wherein the first conversion operation means (44) is an image corresponding to the monochrome image data (A). Provided is a monochrome image display device (4) characterized in that the aspect ratio conversion process is performed so that the entirety falls within the first region.
In the monochrome image display device (4) according to the third aspect, for example, the entire image corresponding to the monochrome medical image data having a large number of pixels created in the medical image photographing device is formed in the first region (48a) having a small number of pixels. Can be displayed.

  According to the monochrome image display device of the present invention, monochrome images corresponding to both image data can be properly displayed even when monochrome image data and color image data are mixed to form one screen.

It is explanatory drawing which shows the state which is not displaying the medical image with the monochrome image display apparatus which concerns on Example 1. FIG. 1 is a block diagram illustrating a configuration of a monochrome image display apparatus according to Embodiment 1. FIG. It is the elements on larger scale which show a monochrome liquid crystal panel. It is a flowchart which shows the medical image viewer process by a personal computer. It is a conceptual diagram which shows the color image data which the medical image viewer process produced. It is a conceptual diagram which shows the color image data which a personal computer outputs. FIG. 6 is a flowchart illustrating image processing by the monochrome image display apparatus according to the first embodiment. It is explanatory drawing which shows the state which is displaying the medical image with the monochrome image display apparatus which concerns on Example 1. FIG.

  Hereinafter, the present invention will be described in more detail with reference to embodiments shown in the drawings. Note that the present invention is not limited thereby.

Example 1
In FIG. 1, a medical image photographing apparatus F photographs an image for breast cancer diagnosis, for example, using an FPD (Flat Panel Detector) composed of m rows and n columns of pixels, and precision monochrome medical image data A which is data of the image. Is stored in the medical image data server D. For convenience of explanation, m ≦ n. For example, m = 3328 and n = 4096.

  The personal computer 3 creates color image data B that can display a color personal computer screen if input to a normal display device, and is a monochrome image display device via a video signal line 32 such as a DVI cable or HDMI cable at a predetermined cycle. It is sent to 4. When the monochrome liquid crystal panel 48 of the monochrome image display device 4 includes pixels of V rows and H columns, the color image data B also has the number of pixels of V rows and H columns. However, there are three pixel values of R pixel value, G pixel value, and B pixel value for one pixel. For convenience of explanation, V ≦ H. For example, V = 1200 and H = 1600.

  The medical image viewer program 31 executed on the personal computer 3 reads the precise monochrome medical image data A from the medical image data server D at an appropriate timing, and displays a monochrome image via a communication signal line 33 such as a USB cable or an IEEE1394 cable. Transfer to device 4.

FIG. 2 is a block diagram showing the monochrome image display device 4.
The monochrome image display device 4 includes a video signal line interface 42 such as a DVI interface and an HDMI interface, a communication signal line interface 43 such as a USB interface and an IEEE 1394 interface, an FPGA (Field-Programmable Gate Array) and an ASIC (Application Specific). Integrated circuit), a memory 45 for storing programs and data, a video memory 46 for storing display data, and a monochrome liquid crystal panel 48 based on the display data stored in the video memory 46. A monochrome liquid crystal panel drive circuit 47 for independently driving the subpixels and a monochrome liquid crystal panel 48 are provided.

  As shown in FIG. 3, one pixel U of the monochrome liquid crystal panel 48 includes three subpixels u1, u2, and u3 arranged in the row direction. One pixel U is a square, and the shape of the sub-pixels u1, u2, and u3 is a rectangle whose length in the row direction is 1/3 of the length in the column direction.

Returning to FIG. 1, in the monochrome image display device 4, the video processor 44 performs color monochrome conversion processing on the color image data B to create second converted monochrome image data C, which is used as display data as a video memory. 46. In the second converted monochrome image data C, since there are monochrome pixel values corresponding to three sub-pixels constituting one pixel of the monochrome liquid crystal panel 48, the number of pixels in the row direction is 3 * H.
As the color / monochrome conversion process, for example, the process disclosed in Patent Document 2 can be used. Alternatively, other color / monochrome conversion processing such as color / monochrome conversion processing in which the monochrome pixel values D1, D2, and D3 of the three sub-pixels are D1 = D2 = D3 = 0.3 * R + 0.6 * G + 0.1 * B May be used.

  As a result, a monochrome image corresponding to the color image data B is displayed on the monochrome liquid crystal panel 48.

  When a medical image captured by the medical image capturing apparatus F is desired to be viewed, the medical image viewer program 31 is executed on the personal computer 3.

FIG. 4 is a flowchart showing medical image viewer processing by the medical image viewer program 31.
Steps P0 and P1 are repeatedly executed at an appropriate timing.
In step P0, the precise monochrome medical image data A is read from the medical image data server D.
In Step P1, the precise monochrome medical image data A and its ID are transferred to the monochrome image display device 4 via the communication signal line 33. Then, the process returns to step P0.

Steps P11 to P14 are repeatedly executed at different timings from steps P0 and P1.
In step P11, the operator waits for an instruction to display a medical image. If there is an instruction, the process proceeds to Step P12. As described above, the color image data B is continuously sent to the monochrome image display device 4 at a predetermined cycle.
In step P <b> 12, the monochrome image display device 4 is notified of the medical image ID (identifier) designated by the operator via the communication signal line 33.

In Step P13, the start coordinates and size of the area (hereinafter referred to as the first area) for displaying the medical image of the color image data B to be sent to the monochrome image display device 4 are designated numerically.
FIG. 8 illustrates the first region 48a. The start coordinates are, for example, the coordinates of the upper left corner of the first region 48a. The size is q × P. It is assumed that q ≦ V and P <H, or q <V and P ≦ H. For example, q = 1109 and P = 1365.

In Step P14, the R pixel value, G pixel value, and B pixel value of the first region 48a are changed to specific color pixel values. However, if there is an exclusion area in the first area 48a, the color pixel value of the exclusion area remains unchanged. The specific color pixel value is a color pixel value other than the color pixel value of the graphic / character to be displayed on the medical image and the color pixel value of the mouse cursor (pointer).
FIG. 5 illustrates the color image data created in step P14. 48c is an exclusion area.
As shown in FIG. 6, the operating system of the personal computer 3 creates color image data B in which the mouse cursor Z is added to the color image data created in step P <b> 14 and outputs it from the video signal line 32.

  In step P15, if there is no instruction for the end of the medical image display by the operator, the process returns to step P13, and the color image data B as shown in FIG. On the other hand, if there is an instruction to end, the process proceeds to Step P16.

  In Step P16, the monochrome image display device 4 is notified of the end of the medical image display. Then, the process returns to Step P11. Returning to step P11 returns to the state in which the normal color image data B as shown in FIG.

  FIG. 7 is a flowchart showing image processing by the video processor 44.

Step D1 is executed every time the precise monochrome medical image data A is transferred from the personal computer 3.
In step D1, the precise monochrome medical image data A sent from the personal computer 3 is stored in the memory 45 in association with the ID.

Steps D2 to D8 are repeatedly executed at a predetermined cycle.
In step D2, it is checked whether the ID of the medical image is notified from the personal computer 3. If not, the process proceeds to step D3. If notified, the process proceeds to step D4.

In step D3, the color image data B sent from the personal computer 3 is subjected to color / monochrome conversion processing to create second converted monochrome image data C, which is stored in the video memory 46 as display data. As a result, as shown in FIG. 1, an image obtained by converting the color image created by the personal computer 3 into a monochrome image is displayed. Then, the process returns to step D2.
As described above, for example, the process disclosed in Patent Document 2 can be used for the color / monochrome conversion process. Other color / monochrome conversion processing such as color / monochrome conversion processing in which the monochrome pixel values D1, D2, and D3 of the three sub-pixels are D1 = D2 = D3 = 0.3 * R + 0.6 * G + 0.1 * B May be used.

In step D4, the precision monochrome medical image data A corresponding to the notified ID is read from the memory 45, and the aspect ratio conversion process is performed on the precision monochrome medical image data A so that it can be fitted into the first area 48a of q rows and P columns. To produce first converted monochrome image data M.
For the aspect ratio conversion process, for example, the process disclosed in Patent Document 1 can be used.

  In step D5, color / monochrome conversion processing is performed on the color image data B sent from the personal computer 3 to create second converted monochrome image data C.

  In step D6, the first converted monochrome image data M created in step D4 is fitted into the pixel corresponding to the specific color pixel value in the first area 48a of the second converted monochrome image data C created in step D5. Composite monochrome image data G is created and stored in the video memory 46 as display data. As a result, as shown in FIG. 8, a medical image is displayed in the first area 48a of the monochrome liquid crystal panel 48, and an image obtained by converting the color image into a monochrome image is displayed in the second area 48b. Then, the image of the second converted monochrome image data C is displayed in the exclusion area 48c in the first area 48a. Also, the mouse cursor Z is displayed in the first area 48a.

In step D7, it is checked whether or not the display of the medical image is notified from the personal computer 3, and if not notified, the process returns to step D5. Thus, the designated medical image is continuously displayed in the first region 48a while the monochrome image in the second region 48b is updated.
On the other hand, if the display end is notified, the process returns to step D2. As a result, the color image created by the personal computer 3 is monochromeized and displayed until the ID of the next medical image is notified.

  The medical image display device 1 is configured by the personal computer 3 executing the medical image viewer program 31 and the monochrome image display device 4.

According to the monochrome image display device 4 of the first embodiment, the following effects can be obtained.
(1) Even when monochrome image data A and color image data B are mixed to form one screen, monochrome images corresponding to both image data can be properly displayed. That is, an image that appropriately reflects the original luminance and aspect ratio for the monochrome image data A and appropriately reflects the original color for the color image data B can be displayed on one screen. .
(2) The graphic / character of the color image data B can be displayed in the excluded area 48c in the first area 48a displaying the monochrome image data A.
(3) The mouse cursor Z can be displayed in the first area 48a displaying the monochrome image data A.
(4) Since the aspect ratio conversion processing is easy to speed up by performing parallel processing, the conversion processing is performed faster than the CPU of the personal computer 3 by executing it with the video processor 44 having a higher degree of parallelism than the CPU of the personal computer 3. The response speed to the operator can be improved.

-Example 2-
If the operator can change the size of the first region 48a, the medical image can be zoomed in / out.
Further, even if only a part of the monochrome image data A designated by the operator is displayed in the first area 48a, the medical image can be zoomed in / zoomed out.

-Example 3-
The size of the first area 48a is determined in advance, and an aspect ratio conversion process adapted to the size is performed on the stored monochrome image data A before the personal computer 3 is notified of the medical image ID. If it is performed and stored in advance, it is only necessary to read the medical image ID when notified from the personal computer 3, and the response can be made faster than the aspect ratio conversion process each time.

  The monochrome image display apparatus of the present invention can be used to increase the efficiency of diagnosis when a doctor interprets a medical image such as an X-ray image, CT image, or MR image.

DESCRIPTION OF SYMBOLS 1 Medical image display apparatus 3 Personal computer 4 Monochrome image display apparatus 31 Medical image viewer program 32 Video signal line 33 Communication signal line 44 Video processor 48 Monochrome liquid crystal panel 48a 1st area 48b 2nd area 48c Exclusion area Z Mouse cursor

Claims (3)

A monochrome image display panel (48) in which one pixel (U) is composed of three sub-pixels (u);
The first region (48a) where the first monochrome image corresponding to the monochrome image data (A) in which one monochrome pixel value is assigned to one pixel and the one pixel are R pixel value, G pixel value, B Area dividing means (44) for dividing the screen of the monochrome image display panel (48) into a second area (48b) where a second monochrome image corresponding to the color image data (B) to which the pixel value is assigned is to be displayed. )When,
A monochrome pixel value assigned to the sub-pixel (u) is obtained from the monochrome pixel value of the monochrome image data (A) in order to display the first monochrome image reflecting the image aspect ratio in the monochrome image data (A). First conversion calculation means (44) for obtaining first converted monochrome image data (M) by aspect ratio conversion processing;
In order to display the second monochrome image reflecting the color in the color image data (B), the R pixel value, the G pixel value, and the B pixel value of the color image data (B) are transferred to the sub-pixel (u). Second conversion calculation means (44) for obtaining second converted monochrome image data (C) by color monochrome conversion processing for obtaining a monochrome pixel value to be assigned;
In the first area (48a), the first monochrome image is displayed based on the first converted monochrome image data (M), and in the second area (48b), based on the second converted monochrome image data (C). And a monochrome image display panel driving means (47) for independently driving the subpixel (u) so as to display the second monochrome image. Monochrome image display device (4) according to claim 1,
The region dividing means (44) sets the R pixel value, G pixel value, and B pixel value of pixels other than the excluded region (48c) in the first region (48a) as specific color pixel values,
The monochrome image display panel driving means (47) displays the first monochrome image based on the first converted monochrome image data (M) at the pixel of the specific color pixel value in the first region (48a). In addition, the second monochrome image is displayed based on the second converted monochrome image data (C) in the pixels other than the pixel of the specific color pixel value in the first region (48a) and in the second region (48b). A monochrome image display device (4) characterized in that:   3. The monochrome image display device (4) according to claim 1, wherein the first conversion calculation means (44) causes the entire image corresponding to the monochrome image data (A) to fall within the first region. A monochrome image display device (4), wherein the aspect ratio conversion processing is performed on the monochrome image display device (4).

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