Stress distribution image processing device

Patent metadata

Field	Value
Publication number	US-11808657-B2
Application number	US-202117563627-A
Country	US
Kind code	B2
Filing date	Dec 28, 2021
Priority date	Jul 3, 2019
Publication date	Nov 7, 2023
Grant date	Nov 7, 2023

Abstract

A stress distribution image processing device including:a processing unit configured to:designate a normalization region which includes a portion of stress equal to or larger than a predetermined threshold value in a screen of a stress distribution image of a target object; andnormalize pixels in the normalization region based on stress values in the normalization region to obtain a normalized image.

First claim

What is claimed is:

1. A stress distribution image processing device comprising:
a memory storing a program; and
a processing unit,
wherein the program, when executed by the processing unit, causes the processing unit to:
designate a normalization region which includes a portion of stress equal to or larger than a predetermined threshold value in a screen of a stress distribution image of a target object; and
obtain a normalized image of stress distribution by normalizing pixels in the normalization region based on stress values in the normalization region, by utilizing a normalization method using a maximum stress value and a minimum stress value of the pixels in the normalization region.

2. The stress distribution image processing device according to claim 1 , wherein the program causes the processing unit to normalize all pixels in the normalization region to obtain the normalized image.

3. The stress distribution image processing device according to claim 1 , wherein the program causes the processing unit to set a rectangular range including a portion of stress equal to or larger than the predetermined threshold value as a normalization region.

4. The stress distribution image processing device according to claim 2 , wherein in the normalization method, the maximum value and the minimum value of the stress values in all pixels in the normalization region are set to 1 and 0, respectively.

5. The stress distribution image processing device according to claim 2 , wherein the program causes the processing unit to perform normalization over an entire screen of the stress distribution image based on a normalization method in the normalization region to obtain a normalized image to function as an entire screen expansion unit.

6. The stress distribution image processing device according to claim 2 , wherein the program causes the processing unit to perform, with respect to a plurality of normalized images corresponding to a plurality of different conditions for an identical target object, at least one of four arithmetic operations on all pixels in the normalization region between the respective normalized images to obtain a four arithmetic operation processed image to function as a four arithmetic operation unit.

7. The stress distribution image processing device according to claim 6 , wherein the program causes the processing unit to detect an abnormality of the target object based on the four arithmetic operation processed image to function as an abnormality detection unit.

8. The stress distribution image processing device according to claim 1 , wherein the normalizing in the normalization region is applied to the entire stress distribution image, and values exceeding the maximum and minimum values of the normalization region in the entire stress distribution image are rounded and the maximum and minimum values after normalization assigned to the values that exceed the maximum and minimum values of the normalized region.

9. The stress distribution image processing device according to claim 1 , wherein the processing unit includes at least one of a CPU, an MPU, or a microcomputer.

10. A stress distribution image processing device comprising:
a memory storing a program; and
a processing unit,
wherein the program, when executed by the processing unit, causes the processing unit to:
designate a normalization region which includes a portion of stress equal to or larger than a predetermined threshold value in a screen of a stress distribution image of a target object; and
obtain a normalized image of stress distribution by normalizing all pixels in the normalization region based on stress values in the normalization region, and
in the normalization method, of all pixels in the normalization region, an average is set to 0 and a variance is set to 1.

11. A stress distribution image processing device comprising:
a memory storing a program; and
a processing unit,
wherein the program, when executed by the processing unit, causes the processing unit to:
designate a normalization region which includes a portion of stress equal to or larger than a predetermined threshold value in a screen of a stress distribution image of a target object; and
obtain a normalized image of stress distribution by normalizing all pixels in the normalization region based on stress values in the normalization region, and
the program causes the processing unit to perform, with respect to a plurality of normalized images corresponding to a plurality of different conditions for an identical target object, at least one of four arithmetic operations on all pixels in the normalization region between the respective normalized images to obtain a four arithmetic operation processed image to function as a four arithmetic operation unit.

12. The stress distribution image processing device according to claim 11 , wherein the program causes the processing unit to detect an abnormality of the target object based on the four arithmetic operation processed image to function as an abnormality detection unit.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Irie Yousuke

Classifications

• G01M11/081 Primary

  by using a contact-less detection method, i.e. with a camera · CPC title

• G01L1/248

  using infrared (G01L1/241, G01L1/242 take precedence) · CPC title

• G01M5/0008

  of bridges · CPC title

• G06T1/00 Primary

  General purpose image data processing · CPC title

• G01M5/0091 Primary

  by using electromagnetic excitation or detection · CPC title