US 2026/0214352 A1 · THERMOGRAPHIC BAD PIXEL DETECTION METHOD AND DEVICE

Abstract

A thermographic bad pixel detection method is disclosed, which includes: by a data capturing circuit, capturing a raw image from a thermographic device; by a processor, performing a non-uniformity correction algorithm on the raw image to generate multiple respective correction coefficients of multiple pixels in the raw image; by the processor, generating multiple feature coordinates in a feature space based on pixel values of each pixel in the raw image and the multiple correction coefficients of each pixel; by the processor, performing outlier detection on the multiple feature coordinates to generate at least one outlier coordinate as at least one bad pixel coordinate, where the at least one bad pixel coordinate indicates that at least one of the pixels corresponding to the at least one bad pixel coordinate in the raw image is abnormal.

Claims10

Dependent claims

A thermographic bad pixel detection method, comprising:

step a) by a data capturing circuit, capturing a raw image from a thermographic device;
step b) by a processor, performing a non-uniformity correction algorithm on the raw image to generate a plurality of respective correction coefficients of a plurality of pixels in the raw image;
step c) by the processor, generating a plurality of feature coordinates in a feature space based on pixel values of each of the pixels in the raw image and the plurality of correction coefficients of each of the pixels;
and
step d) by the processor, performing outlier detection on the plurality of feature coordinates to generate at least one outlier coordinate as at least one bad pixel coordinate, wherein the at least one bad pixel coordinate indicates that at least one of the pixels corresponding to the at least one bad pixel coordinate in the raw image is abnormal.

2 more elements

A thermographic bad pixel detection device, comprising:

a data capturing circuit, configured for capturing a raw image from a thermographic device;
a storage, configured for storing a plurality of instructions;
and
a processor, connected to the data capturing circuit and the storage, and configured for accessing the plurality of instructions to execute following actions:
action a) performing a non-uniformity correction algorithm on the raw image to generate a plurality of respective correction coefficients of a plurality of pixels in the raw image;
action b) generating a plurality of feature coordinates in a feature space based on pixel values of each of the pixels in the raw image and the plurality of correction coefficients of each of the pixels;
and
action c) performing outlier detection on the feature coordinates to generate at least one outlier coordinate as at least one bad pixel coordinate, wherein the at least one bad pixel coordinate indicates that at least one of the pixels corresponding to the at least one bad pixel coordinate in the raw image is abnormal.

5 more elements

Dependencies are inferred from the claim text.

Thermographic bad pixel detection method and device

Life of this patent

Thermographic bad pixel detection method and device

Life of this patent

Abstract

Claims10