IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, IMAGE PROCESSING METHOD, AND IMAGE PROCESSING PROGRAM

• US 20140015954A1
• Filed: 06/05/2013
• Published: 01/16/2014
• Est. Priority Date: 12/27/2011
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Tsujimoto, Takuya, Sato, Kazuyuki, Sasaki, Toru, Tsuzuki, Hidetoshi
• Granted Patent: US 8,947,519 B2
• Time in Patent Office: Days
• US Class Current: 348/79
• CPC Class Codes: G02B 21/36 arranged for photographic purposes or projection purposes G02B21/18 takes precedenceor digital imaging or video purposes including associated control and data processing arrangements image data processing per se G06T
• CPC Class Codes: G02B 21/365 Control or image processing arrangements for digital or video microscopes G02B21/361, G02B21/362 take precedence
• CPC Class Codes: G06T 3/40 Scaling of whole images or parts thereof, e.g. expanding or contracting
• CPC Class Codes: G16H 10/40 for data related to laboratory analysis, e.g. patient specimen analysis
• CPC Class Codes: G16H 30/20 for handling medical images, e.g. DICOM, HL7 or PACS

Abstract

An image processing apparatus which processes virtual slide image data to be displayed in an image display apparatus includes an image data obtaining unit which obtains image data obtained by capturing an image of a target object, and an image data generation unit which generates display image data corresponding to the image of the target object to be displayed in the image display apparatus in a display magnification corresponding to a predetermined field number of a microscope.

Claims

1. An image processing apparatus which processes virtual slide image data to be displayed in an image display apparatus, the image processing apparatus comprising:

an image data obtaining unit configured to obtain image data obtained by capturing an image of a target object; and

an image data generation unit configured to generate display image data corresponding to the image of the target object to be displayed in the image display apparatus in a display magnification corresponding to a predetermined field number of a microscope.

2. The image processing apparatus according to claim 1,

wherein the image data generation unit determines the display magnification such that a diameter of a predetermined actual view field of the microscope coincides with a length of a long side or a short side of a display screen of the image display apparatus.

3. The image processing apparatus according to claim 1,

wherein the image data generation unit determines the display magnification in accordance with information on a view field of an existing microscope.

4. The image processing apparatus according to claim 1,

wherein the image data generation unit determines the display magnification using a predetermined one of a plurality of information items on a view field of an existing microscope as initial information.

5. The image processing apparatus according to claim 1,

wherein the image data generation unit determines the display magnification using one of a plurality of information items on a view field of an existing microscope selected by a user.

6. The image processing apparatus according to claim 1,

wherein the image data generation unit generates the display image data in accordance with the number of pixels included in the image display apparatus.

7. The image processing apparatus according to claim 1,

wherein the image data generation unit generates the display image data in accordance with a magnification of an objective lens at a time when the target image is captured.

8. The image processing apparatus according to claim 1,

wherein the image data generation unit generates the display image data of the display magnification corresponding to a pixel magnification represented by the following equation:

Pixel Magnification=((the Number of Pixels of Long Side or Short Side of Display Screen of Image Display Apparatus)/((Predetermined Field Number of Microscope)/(Pixel Pitch of Image-Pickup Sensor)))×

((Display Magnification in Display Screen of Image Display Apparatus)/(Magnification of Objective Lens in Image Capturing)).

9. The image processing apparatus according to claim 1,

wherein the image data generation unit generates the display image data of the display magnification corresponding to a pixel magnification represented by the following equation:

Pixel Magnification=(Enlargement Magnification)×

(Pixel Pitch of Image-Pickup Sensor)/(Pixel Pitch in Display Screen of Image Display Apparatus),

wherein the enlargement magnification is obtained by the following calculation;

(Display Magnification)×

(Pixel Pitch in Display Screen of Image Display Apparatus)/((Pixel Pitch of Image-Pickup Sensor)×

(Magnification of Objective Lens in Image Capturing)).

10. The image processing apparatus according to claim 1, further comprising:

a mode selection unit configured to select at least one of the following three modes (1) to (3) for selecting an image to be displayed in the image display apparatus;

(1) a mode for displaying display image data generated in a pixel magnification represented by the following equation;

Pixel Magnification=((the Number of Pixels of Long Side or Short Side of Display Screen of Image Display Apparatus)/((Predetermined Field Number of Microscope)/(Pixel Pitch of Image-Pickup Sensor)))×

((Display Magnification in Display Screen of Image Display Apparatus)/(Magnification of Objective Lens in Image Capturing)),

(2) a mode for displaying display image data as pixel actual-size display, and

(3) a mode for displaying display image data generated in a pixel magnification represented by the following equation;

Pixel Magnification=(Enlargement Magnification)×

(Pixel Pitch of Image-Pickup Sensor)/(Pixel Pitch in Display Screen of Image Display Apparatus),

wherein the enlargement magnification is obtained by the following calculation;

(Display Magnification)×

(Pixel Pitch in Display Screen of Image Display Apparatus)/((Pixel Pitch of Image-Pickup Sensor)×

(Magnification of Objective Lens in Image Capturing)).

18. An image processing system comprising:

the image processing apparatus set forth in claim 1; and

an image display apparatus configured to display a virtual slide image processed by the image processing apparatus in a display magnification corresponding to a predetermined field number of a microscope.

11. An image processing method for processing a virtual slide image, comprising:

an image data obtaining step of obtaining image data obtained by capturing an image of a target object; and

an image data generation step of generating display image data representing an image to be displayed in the image display apparatus in a display magnification corresponding to a predetermined field number of a microscope.

12. The image processing method according to claim 11,

wherein, in the image data generation step, the display magnification is determined such that a diameter of a predetermined actual view field of the microscope coincides with a length of a long side or a short side of a display screen of the image display apparatus.

13. The image processing method according to claim 11,

wherein, in the image data generation step, the display magnification is determined in accordance with information on a view field of an existing microscope.

14. The image processing method according to claim 11,

wherein, in the image data generation step, the display magnification is determined using a predetermined one of a plurality of information items on a view field of an existing microscope as initial information.

15. The image processing method according to claim 11,

wherein, in the image data generation step, the display magnification is determined using one of a plurality of information items on a view field of an existing microscope selected by a user.

16. The image processing method according to claim 11,

wherein, in the image data generation step, the display image data of the display magnification changed by a pixel magnification represented by the following equation is generated:

Pixel Magnification=((the Number of Pixels of Long Side or Short Side of Display Screen of Image Display Apparatus)/((Predetermined Field Number of Microscope)/(Pixel Pitch of Image-Pickup Sensor)))×

((Display Magnification in Display Screen of Image Display Apparatus)/(Magnification of Objective Lens in Image Capturing)).

17. The image processing method according to claim 11,

wherein, in the image data generation step, the display image data of the display magnification corresponding to a pixel magnification represented by the following equation is generated:

Pixel Magnification=(Enlargement Magnification)×

(Pixel Pitch of Image-Pickup Sensor)/(Pixel Pitch in Display Screen of Image Display Apparatus),

wherein the enlargement magnification is obtained by the following calculation;

(Display Magnification)×

(Pixel Pitch in Display Screen of Image Display Apparatus)/((Pixel Pitch of Image-Pickup Sensor)×

(Magnification of Objective Lens in Image Capturing)).

19. A program which causes a computer to execute the steps of the image processing method set forth in claim 11.