WO2007086409A1 - Dispositif d'affichage d'image, procédé d'affichage d'image et programme de traitement d'image - Google Patents

Dispositif d'affichage d'image, procédé d'affichage d'image et programme de traitement d'image Download PDF

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Publication number
WO2007086409A1
WO2007086409A1 PCT/JP2007/051062 JP2007051062W WO2007086409A1 WO 2007086409 A1 WO2007086409 A1 WO 2007086409A1 JP 2007051062 W JP2007051062 W JP 2007051062W WO 2007086409 A1 WO2007086409 A1 WO 2007086409A1
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WO
WIPO (PCT)
Prior art keywords
image data
luminance
color tone
image display
image
Prior art date
Application number
PCT/JP2007/051062
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English (en)
Japanese (ja)
Inventor
Masayuki Nakazawa
Original Assignee
Konica Minolta Medical & Graphic, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Medical & Graphic, Inc. filed Critical Konica Minolta Medical & Graphic, Inc.
Publication of WO2007086409A1 publication Critical patent/WO2007086409A1/fr

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • G09G5/028—Circuits for converting colour display signals into monochrome display signals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/08—Biomedical applications
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/2003—Display of colours

Definitions

  • Image display apparatus image display method, and image processing program
  • the present invention relates to an image display device, an image display method, and an image processing program. More specifically, the present invention relates to a color image display device that displays a monochrome image, an image display method, and an image processing program. Background art
  • X-ray imaging equipment such as CR (Computed Radiography), MRI (Magnetic Resonance Imaging) diagnostic equipment, various CT (Computed Tomography) equipment, etc.
  • CR Computer Radiography
  • MRI Magnetic Resonance Imaging
  • CT Computer Tomography
  • the resulting image is recorded on a light-transmissive image recording film such as an X-ray film or a film photosensitive material.
  • a light-transmissive image recording film such as an X-ray film or a film photosensitive material.
  • Such an image recording film is set in an observation apparatus called Schukasten, and is observed in a state where it is irradiated with backside light. In this way, the image recorded on the film is observed and a medical diagnosis is performed.
  • CRT Cathode Ray Tube
  • LC Liquid Crystal Displays
  • a blue-based monochrome film is usually often used as a film for recording an image taken by a medical diagnostic apparatus or medical measurement apparatus as described above.
  • the image is displayed on the screen based on white. Therefore, it is difficult for a doctor who observes both the film and the screen to switch the sensation between images with different base colors, and for a doctor who is accustomed to images using one base color. However, it is difficult to see an image using the other base color.
  • Patent Document 2 When displaying an image on a blue base, the higher the luminance, the stronger the blue color.
  • Patent Document 1 JP 2000-330530 A
  • Patent Document 2 Japanese Patent Laid-Open No. 2003-295851
  • the color tone of the image display device is the same as that of the film. There is a problem that is different from the color tone, or that it is impossible to deal with the color tone of the film preferred by each doctor.
  • the present invention has been made in view of the above points, and can display a monochrome image in a color tone more suitable for diagnosis, and can select a tendency to change the color tone. It is an object of the present invention to provide an image display device, an image display method, and an image processing program.
  • a control unit that distributes monochrome image data to RGB image data
  • the control unit distributes the monochrome image data to the RGB image data so that the blue color tone becomes stronger as the luminance is lower.
  • the invention according to claim 2 is the image display device according to claim 1, wherein the control unit has at least a maximum luminance when displaying the monochrome image data.
  • the monochrome image data is allocated to the RGB image data so that the lower the luminance is, the stronger the color of blue is within the range of LO and the luminance LI that is 1/30 of the maximum luminance LO. .
  • the invention according to claim 3 is the image display device according to claim 1 or claim 2, in which the control unit receives the monochrome image data.
  • R image data KRX B image data (0 ⁇ KR ⁇ 1)
  • G image data KG X B image data (0 ⁇ KG ⁇ 1)
  • the invention according to claim 4 is the image display device according to claim 3, wherein at least one of the KR and KG is at least the luminance L0 and the luminance L1. Within the range, the brightness is so low that the value is as small as possible.
  • the invention according to claim 5 is the image display device according to claim 3 or claim 4, wherein the KR and KG are at least the luminance L0 and the brightness. It is characterized by being KR and KG within the range of degree L1.
  • the invention described in claim 6 is the image display device according to claim 1, wherein the control unit converts the monochrome image data into coordinates (CIE chromaticity diagram).
  • X, y) is characterized in that at least one of the coordinates x and y is distributed so as to decrease at least within the range of the luminance L0 and the luminance L1.
  • the invention according to claim 7 is the image display device according to any one of claims 1, 6 and 6,
  • a color tone input means for inputting a desired color tone
  • the control unit distributes the monochrome image data to the RGB image data in accordance with a color tone input by the color tone input unit.
  • the invention according to claim 8 is the image display device according to any one of claims 1, 6 and 6,
  • An observer identification code input means for inputting an observer identification code capable of identifying the observer, and a memory for storing the observer identification code and a desired color tone for each observer in association with each other And comprising
  • the control unit distributes the monochrome image data to the RGB image data according to a desired color tone of the observer corresponding to the observer identification code input by the observer identification code input unit.
  • the monochrome image data is distributed to the RGB image data so that the blue color tone becomes stronger as the luminance decreases.
  • the invention according to claim 10 is the image display method according to claim 9,
  • the monochrome image data is enhanced so that the lower the brightness, the stronger the blue color tone. Is characterized by allocating to RGB image data.
  • R image data KRX B image data (0 ⁇ KR ⁇ 1)
  • G image data KG X B image data (0 ⁇ KG ⁇ 1)
  • the invention according to claim 12 is the image display method according to claim 11, wherein at least one of the KR and KG is a range of at least the luminance LO and the luminance L1. The lower the brightness, the smaller the value.
  • the invention according to claim 13 is the image display method according to claim 11 or claim 12, wherein the KR and KG are at least the luminance LO and the luminance described above. Within the range of L1, KR and KG.
  • the invention according to claim 14 is the image display method according to claim 9, wherein the control unit converts the monochrome image data into coordinates (CIE chromaticity diagram).
  • X, y) is characterized in that at least one of the coordinates x and y is distributed so as to decrease at least within the range of the luminance LO and the luminance L1.
  • the invention according to claim 15 is the image display method according to any one of claims 9 to 14, when a desired color tone is input.
  • the monochrome image data is distributed to the RGB image data in accordance with the input color tone.
  • the invention according to claim 16 is the image display method according to any one of claims 9 to 14, wherein V is a deviation.
  • V is a deviation.
  • the monochrome image data is distributed to the RGB image data according to a desired color tone associated with each observer.
  • the invention described in claim 17 is characterized in that it causes a computer to execute the image display method described in any one of claims 16 and 16 in claim 9 as well.
  • an RGB image having an appropriate chromaticity close to the color tone of a blue-based film from monochrome image data Since it is distributed to data, it is displayed on the color display section of the liquid crystal panel etc. in a display form (characteristic) suitable for diagnosis with little sensory discomfort between the film color tone and the color tone of the monitor screen for the doctor who is the observer It becomes possible.
  • doctors and the like can sufficiently identify the diseased part on the monitor screen, and it is possible to detect the lesion appropriately.
  • the range of maximum brightness LO and 1/30 brightness L1 when displaying an image is within the range of human Because the eye has a density range (luminance range) that is particularly sensitive to differences in color tone, at least in this density range (luminance range), the tone is adjusted to make the display more suitable for diagnosis. There is an effect that makes possible.
  • an RGB image having an appropriate chromaticity close to the color tone of a blue-based film from monochrome image data. Since it is distributed to the data, it can be displayed on the color display unit in a display form (characteristics) suitable for diagnosis with little sensory discomfort between the color tone of the film and the color tone of the monitor screen. Become.
  • the doctor and the like can sufficiently identify the lesion site on the monitor screen and the doctor or the like on the monitor screen, so that it is possible to appropriately detect the lesion.
  • an RGB image having an appropriate chromaticity close to the color tone of a blue-based film from monochrome image data Since it is distributed to the data, it can be displayed on the color display unit in a display form (characteristics) suitable for diagnosis with little sensory discomfort between the color tone of the film and the color tone of the monitor screen. Become. In addition, it is possible for doctors and the like to sufficiently identify the lesion site on the monitor screen, and to detect the lesion appropriately.
  • an RGB image having an appropriate chromaticity close to the color tone of a blue base film from monochrome image data Since it is distributed to the data, it can be displayed on the color display unit in a display form (characteristics) suitable for diagnosis with little sensory discomfort between the color tone of the film and the color tone of the monitor screen. Become. In addition, it is possible for doctors and the like to sufficiently identify the lesion site on the monitor screen, and to detect the lesion appropriately.
  • an RGB image having an appropriate chromaticity close to the color tone of a blue-based film from monochrome image data Since it is distributed to the data, it can be displayed on the color display unit in a display form (characteristics) suitable for diagnosis with little sensory discomfort between the color tone of the film and the color tone of the monitor screen. Become. In addition, it is possible for doctors and the like to sufficiently identify the lesion site on the monitor screen, and to detect the lesion appropriately.
  • FIG. 1 is a diagram showing a schematic configuration of an image display device according to the present invention.
  • FIG. 2 is a block diagram showing a control configuration of the image display apparatus according to the present invention.
  • FIG. 3 is a diagram showing image data distribution of the image display device according to the present invention.
  • FIG. 4 is a timing chart showing an example of image data processing of the image display device according to the present invention.
  • FIG. 5 is an xy chromaticity diagram when film A is used in the image display device according to the present invention.
  • FIG. 6 is an xy chromaticity diagram when film B is used in the image display device according to the present invention.
  • FIG. 7 is an xy chromaticity diagram when film C is used in the image display device according to the present invention.
  • FIG. 8 is an xy chromaticity diagram when film D is used in the image display device according to the present invention.
  • FIG. 9 is an xy chromaticity diagram when film E is used in the image display device according to the present invention.
  • FIG. 10 is a diagram showing the relationship between the input data according to the present invention and the values of KR and KG for reproducing the color tone of the monochrome film using the input data.
  • FIG. 11 is a block diagram showing a schematic configuration of a modification of the image display device shown in FIG. 1.
  • FIG. 12 is a block diagram showing a schematic configuration of a modified example of the image display device shown in FIG. Explanation of symbols
  • FIG. 1 shows a schematic configuration of an image display device 1 according to the present invention.
  • This image display device 1 has a maximum display brightness of 200 so that it can be used as a medical image display device.
  • the image display device 1 includes a color liquid crystal panel composed of liquid crystals.
  • the operation mode of the LCD panel 2 is not particularly limited. TN (Twisted Nematic) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, STN (Supernet) mode, and TN (Twisted Nematic) mode, STN (Supervisor) mode, and others.
  • Twisted Nematic mode and MVA (Multi-domain Vertical Alignement) mode can be applied.
  • MVA Multi-domain Vertical Alignement
  • the liquid crystal panel 2 is provided with a backlight 3 that irradiates light on the back surface of the liquid crystal panel 2 in order to observe an image displayed on the liquid crystal panel 2.
  • a known liquid crystal panel backlight can be applied to the backlight 3.
  • the image display device 1 is connected to an image supply device 4 of a medical diagnostic device via an interface 5, and image data of a monochrome diagnostic image acquired by the medical diagnostic device is stored. The image is input to the image display device 1. As this medical diagnostic device
  • the image supply device 4 is not limited to the one exemplified here, but may be an image storage device such as an image server connected by a network.
  • the interface 5 is connected to a control unit 6 that controls each unit of the image display device 1. Further, the control unit 6 converts the image data supplied from the image supply device 4 into image data to be displayed on the image display device 1 for FRC (Flame Rate Control).
  • FRC Freme Rate Control
  • FRC display means that when displaying high-resolution image data with a gradation resolution (number of bits) using a display device, the number of images corresponding to the difference in the number of bits from the image data with a high number of bits.
  • gradation representation corresponding to a high number of bits is performed on an image display device with a low number of bits. is there.
  • the data processing unit 8 generates 2n image data groups with a low bit number when the number of bits is different, stores the generated image data groups in a frame, and sequentially displays them. Therefore, a normal image display device is used because it has lower gradation resolution of image data than a medical diagnostic device.
  • FIG. 2 shows the configuration of the control unit 6.
  • the 10-bit image data acquired by the image supply device 4 is divided into four to obtain 8-bit image data, and the obtained 8-bit image data is used in four frames. By displaying them sequentially, 8 bits represent 10 bits of gradation. This will be described in detail below with reference to FIG.
  • the control unit 6 is provided with a first frame memory (referred to as FM in the figure) 7 for storing 10-bit image data input from the interface 5.
  • This first frame memo A data processing unit 8 that divides 10-bit image data input from the interface 5 into 8-bit image data is connected to the line 7.
  • the data processing unit 8 distributes monochrome image data input from the image supply device 4 to RGB (R: Red, G: Green, B: Blue) three-color image data. Yes. Specifically, the data processing unit 8 converts the input monochrome image data.
  • R image data KR X B image data (rounded down) (0 ⁇ KR ⁇ 1)
  • G image data KG X B image data (rounded down) (0 ⁇ KG ⁇ 1) ⁇ ⁇ ⁇ Formula (1)
  • the data processing unit is connected to a second frame memory 9a to a second frame memory 9d for storing the RGB image data distributed according to the equation (1).
  • each of the RGB data distributed by the equation (1) is transmitted by the data processing unit 8 according to the data distribution stored in the data processing unit 8 (shown in FIG. 3). It is allocated to 2 frame memory 9d.
  • the data processing unit 8 distributes 10-bit RGB data 509 to 128, 127, 127, and 127 image data, and each image data is assigned to the second frame memory 9a to the second frame memory 9a. It is stored in the frame memory 9d.
  • the RGB data 510 is divided into 128, 127, 128, and 127 image data, and each image data is stored in the second frame memory 9a to the second frame memory 9d. It is like that.
  • the frame switching unit 10 is connected to the second frame memory 9a to the second frame memory 9d.
  • a liquid crystal driving unit 11 for outputting image data stored in the second frame memory 9a to the second frame memory 9d! Speak.
  • the liquid crystal driving unit 11 is connected to the liquid crystal panel 2, and the liquid crystal driving unit 11 controls the liquid crystal panel 2 based on the image data to display an image.
  • FIGS. 5 to 9 show the relationship between luminance and color tone when images recorded from blue-based monochrome film A to monochrome film E are displayed on the shukasten.
  • These coordinates (X, y) in Fig. 5 to Fig. 9 are the coordinates of CIE chromaticity. The smaller the x and y values, the more blue the color becomes. Indicates strong.
  • the arrows in the figure indicate the direction in which the color tone changes when the brightness is changed from high to low (when the film density is changed from light to dark).
  • two types of fluorescent lamps with different colors are used as light sources for Schaukasten.
  • the relationship between the luminance and the color tone of the monochrome film A is such that the blue color tone becomes stronger as the luminance becomes lower.
  • the monochrome film B force monochrome film E has a tendency that the color tone of the bluish color becomes stronger as the luminance decreases in a part of the luminance range.
  • the tendency of the change in color tone with respect to the brightness shows the same tendency in each film even if the type of light source is different.
  • FIG. 10 shows the relationship between the input data and the values of KR and KG that reproduce the color tone of the monochrome film using the input data.
  • Figures 10 (a) to 10 (e) correspond to monochrome film A to monochrome film E, respectively.
  • This input data indicates the display brightness.
  • the values of KR and KG tend to be smaller as the luminance is lower.
  • the value of KG tends to be larger than the value of KR, and at least within the range of the maximum luminance and 1/30 of the luminance, The value of KG is larger than the value.
  • the control unit 6 stores the image data in the first frame memory 7.
  • the control unit 6 distributes the image data input to the data processing unit 8 to each of the RGB image data according to the equation (1), and displays the allocated image data in the data of Table 1 (Fig. 3).
  • the second frame memory a9 to the second frame memory al2 are stored according to the distribution.
  • the frame switching unit 10 switches the connection between the second frame memory a9 to the second frame memory al 2 by the drive control of the control unit 6, and is stored in the second frame memory a9 to the second frame memory al2.
  • the image data is output to the liquid crystal drive unit 11.
  • the liquid crystal drive unit 11 Based on the image data input to the crystal drive unit 11, the liquid crystal panel 2 is driven and controlled to display an image on the liquid crystal panel 2.
  • the image display device 1 has an effect of being able to display a monochrome image in a blue color tone more suitable for diagnosis.
  • the distribution ratio of the image data is determined by the equation (1).
  • the realization of the color tone shown in the example is not limited to this.
  • the input monochrome image data For example, the input monochrome image data
  • R image data KR X B image data (rounded down) (0 ⁇ KR ⁇ 1)
  • G image data KG X B image data (rounded down) (0 ⁇ KG ⁇ 1) ⁇ ⁇ ⁇ Formula (1)
  • a color tone input means 21 for an observer (physician or the like) to set and input a desired color tone to the image display device, and a monochrome image data for realizing each color tone.
  • a storage unit 22 that stores in association with what ratio data is distributed to RGB.
  • the storage unit 22 can store the values of KR and KG corresponding to the input signal input from the color tone input means 21 as a table (Look Up Table: LUT) (not shown). For example, a plurality of KR and KG LUTs corresponding to the color tones of a plurality of films can be stored.
  • the color tone input means 21 may display, for example, a plurality of film type names, and the color tone may be input by the viewer selecting a desired film type name from among them.
  • a color tone may be displayed, and an observer may select a desired color tone from the displayed color tone.
  • the control unit 6 reads a table corresponding to the color tone from the storage unit 22, and the data processing unit 8 allocates data while referring to this, and displays the display image. Image data is generated.
  • the type of film conventionally used in a medical facility and the color tone of the film used and familiarized by the observer are known. Since the color tone of the image displayed on the liquid crystal panel 2 can be changed according to the desired color tone, an image with less sense of incongruity can be obtained and appropriate diagnosis can be performed.
  • an observer identification code such as an observer ID that can identify an individual is assigned to each observer (doctor or the like), for example, as shown in FIG.
  • An observer identification code input means 23 and a storage unit 24 may be provided for an observer (such as a doctor) to input an observer identification code.
  • the observer's favorite color tone is associated with the observer identification code and stored in the storage unit 24 in advance.
  • the control unit 6 reads out the color tone associated with the input observer identification code from the storage unit 24, and the data processing unit 8 The color tone is automatically selected, and the data is distributed so as to obtain this color tone, thereby generating display image data.
  • the color tone input means 21 or the observer identification code input means 23 and the storage units 22 and 24 are integrally provided inside the image display device provided with the liquid crystal panel 2. However, it may be possible to provide all or a part of these to an external device such as an image supply device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Controls And Circuits For Display Device (AREA)

Abstract

L'invention concerne un dispositif d'affichage d'image, un procédé d'affichage d'image et un programme de traitement d'image, qui peuvent afficher une image monochromatique dans une teinte plus adéquate pour des diagnostics et qui peuvent sélectionner la tendance pour changer la teinte. Ce dispositif d'affichage d'image est de type couleur comprenant une unité de commande pour distribuer les données d'image monochromatique en données RVB de sorte qu'il affiche une image sur la base des données d'image distribuées par l'unité de commande. Cette unité de commande distribue les données d'image de sorte qu'une teinte bleue peut être la plus intensifiée pour la luminosité inférieure des données d'image monochromatique.
PCT/JP2007/051062 2006-01-26 2007-01-24 Dispositif d'affichage d'image, procédé d'affichage d'image et programme de traitement d'image WO2007086409A1 (fr)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002199241A (ja) * 2000-10-27 2002-07-12 Koninkl Philips Electronics Nv 濃淡画像をカラーで再現する方法
JP2002325735A (ja) * 2001-04-27 2002-11-12 Konica Corp 医用画像表示方法、医用画像表示装置、医用画像表示プログラム、および記録媒体

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002199241A (ja) * 2000-10-27 2002-07-12 Koninkl Philips Electronics Nv 濃淡画像をカラーで再現する方法
JP2002325735A (ja) * 2001-04-27 2002-11-12 Konica Corp 医用画像表示方法、医用画像表示装置、医用画像表示プログラム、および記録媒体

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