The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 02, 2021

Filed:

Mar. 29, 2019
Applicant:

Apical Limited, Cambridge, GB;

Inventors:

Alexey Kornienko, Cambridge, GB;

David Hanwell, Cambridge, GB;

Assignee:

Apical Limited, Cambridge, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06T 15/80 (2011.01); G06T 15/00 (2011.01); G06T 17/20 (2006.01);
U.S. Cl.
CPC ...
G06T 15/80 (2013.01); G06T 15/005 (2013.01); G06T 17/20 (2013.01);
Abstract

A method of calibrating image data, the method comprising the steps of obtaining the image data and applying a shading correction mesh to the image data, wherein the shading correction mesh comprises a plurality of nodes, and is used to generate shading correction values for each pixel location in the image data. The blocks of the generated shading correction values are then grouped each group of blocks comprising a plurality of blocks, and each block comprising a plurality of pixel locations. An analysis of each of the groups of blocks of generated shading correction values is performed, and an updated shading correction mesh based on the analysis of the groups of one or more blocks is generated.


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