Disease diagnostic apparatus, image processing method in the same apparatus, and medium storing program associated with the same method

Patent metadata

Field	Value
Publication number	US-10055844-B2
Application number	US-201715800555-A
Country	US
Kind code	B2
Filing date	Nov 1, 2017
Priority date	Nov 7, 2014
Publication date	Aug 21, 2018
Grant date	Aug 21, 2018

Abstract

A diagnostic apparatus for diagnosing a disease using a captured image of an affected area, the apparatus including a memory configured to memorize the captured image; and a processor configured to process the memorized image memorized in the memory. The processor is configured to perform a highlighting process which includes separating the captured image into the brightness component and a color information component; separating the brightness component into a base component and a detail component; highlighting the separated brightness component; and adding a region to be diagnosed in the captured image to the highlighted brightness component while a specified color of the region to be diagnosed is maintained.

First claim

What is claimed is:

1. A diagnostic apparatus for diagnosing a disease using a captured image of an affected area, the apparatus comprising:
a memory configured to store the captured image; and
a processor configured to process the captured image stored in the memory,
wherein the processor is configured to perform operations including:
separating the captured image into a brightness component and a color information component by converting the captured image from RGB color space to Lab color space;
highlighting the brightness component;
determining a likelihood representing a likeness of a region to be diagnosed based on a specified color component representing the region;
generating a highlighted brightness image based on the highlighted brightness component and the likelihood representing the likeness of the region to be diagnosed; and
generating a highlighted color image in which a specified color corresponding to the specified color component is maintained by converting the generated highlighted brightness image and the color information component from Lab color space to RGB color space.

2. The diagnostic apparatus according to claim 1 , wherein the region is a vessel-corresponding region,
wherein the determining the likelihood comprising determining a likelihood representing a likeness of a vessel based on a red-based component as the specified color component, and
wherein the generating the highlighted brightness image comprises generating a highlighted image based on the highlighted brightness component and the likelihood representing the likeness of a vessel.

3. The diagnostic apparatus according to claim 1 , wherein the highlighted brightness image is generated in accordance with the following formula:
L″=L ′*(1− V )+ L*V

where:
L″ is the highlighted brightness image,
L′ is the highlighted brightness component,
L is the brightness component, and
V is the likelihood representing the likeness of the region to be diagnosed.

4. The diagnostic apparatus according to claim 1 , wherein the operations performed by the processor further include displaying the captured image and the highlighted color image side by side on a display.

5. The diagnostic apparatus according to claim 1 , wherein the operations performed by the processor further include separating the brightness component into a base component having globally-varying properties statistically and a detail component having locally-varying properties statistically, and
wherein the highlighting the brightness component comprises highlighting on the base component and the detail component respectively and composing the highlighted base component and the highlighted detail component to generate the highlighted brightness component.

6. The diagnostic apparatus according to claim 1 , wherein the region is a basal cell cancer corresponding region, and
wherein the determining the likelihood comprises determining a likelihood representing a likeness of a basal cell cancer based on a blue-based component in the color information component as the specified color component.

7. The diagnostic apparatus according to claim 1 , wherein the operations performed by the processor further include selecting the region corresponding to the specified color to be maintained, and
wherein the generating the highlighted color image comprises generating the highlighted color image using a likelihood representing a likeness of a basal cell cancer when the selected region is a basal cell cancer and generating the highlighted color image using a likelihood representing a likeness of a vessel when the selected region is a vessel.

8. The diagnostic apparatus according to claim 1 , wherein the operations performed by the processor further include variably designating a degree of maintaining the specified color of the region, and
wherein as the degree of maintaining the specified color increases, the specified color is more accurately maintained.

9. A method of processing an image in a diagnostic apparatus for diagnosing a disease using a captured image of an affected area, the method comprising:
separating the captured image into a brightness component and a color information component by converting the captured image from RGB color space to Lab color space;
highlighting the brightness component;
determining a likelihood representing a likeness of a region to be diagnosed based on a specified color component representing the region;
generating a highlighted brightness image based on the highlighted brightness component and the likelihood representing the likeness of the region to be diagnosed; and
generating a highlighted color image in which a specified color corresponding to the specified color component is maintained by converting the generated highlighted brightness image and the color information component from Lab color space to RGB color space.

10. A non-transitory computer readable medium storing a program for processing an image in a diagnostic apparatus for diagnosing a disease using a captured image of an affected area, the program being executable by a computer of the diagnostic apparatus to perform operations including:
separating the captured image into a brightness component and a color information component by converting the captured image from RGB color space to Lab color space;
highlighting the brightness component;
determining a likelihood representing a likeness of a region to be diagnosed based on a specified color component representing the region;
generating a highlighted brightness image based on the highlighted brightness component and the likelihood representing the likeness of the region to be diagnosed; and
generating a highlighted color image in which a specified color corresponding to the specified color component is maintained by converting the generated highlighted brightness image and the color information component from Lab color space to RGB color space.

Assignees

• Casio Computer Co Ltd

Inventors

• Hamada Akira
• Nakajima Mitsuyasu
• Tanaka Masaru
• Sato Toshitsugu

Classifications

• G06T2207/30101

  Blood vessel; Artery; Vein; Vascular · CPC title

• G06T2207/20028

  Bilateral filtering · CPC title

• G06T7/11

  Region-based segmentation · CPC title

• G06T2207/30088

  Skin; Dermal · CPC title

• G06T2207/30096

  Tumor; Lesion · CPC title