A light field image rotation error correction method

Abstract

A light field image rotation error correction method relates to the field of image processing, in order to solve the problems of large calculation amount, long time consuming, low precision of rotation angle solution and undesirable correction effect existing in the prior light field image rotation error correction method. The method comprises steps: acquiring the original white image of the lightfield; extracting a reference image; the reference image being initially divided into a plurality of micro-transmissive mirror images, and the coarse adjustment center region being determined; calculating a center coordinate of each micro-transparent mirror image; the image rotation angle being estimated by fitting the center coordinates linearly; the pixel points in the original image of the light field to be corrected being subjected to reverse rotation coordinate mapping and interpolation processing to obtain the corrected original image of the light field; the four-dimensional light fieldanalysis and digital refocusing being carried out on the target scene to obtain the refocused image; the pixel points in the refocused image being mapped and interpolated to obtain the corrected refocused image. The invention is suitable for correcting light field images.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a light field image rotation error correction technology. Background technique [0002] The light field camera applies light field imaging technology, which can acquire and display the multi-angle light field radiation intensity distribution from space objects through a single exposure. Unlike traditional imaging devices that only record spatial information, it can simultaneously record two-dimensional spatial information and two-dimensional angular information of a four-dimensional light field. The preservation of light radiation angle information provides the required light field data for multi-view imaging, digital refocusing and 3D reconstruction of the target scene. In recent years, a variety of reconstruction algorithms for complex scenes have been developed using light field image data, and light field cameras are gradually being used in engineering fields such as high tem...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of large amount of calculation, long time consumption, low accuracy of solving the rotation angle and unsatisfactory correction effect existing in the existing light field image rotation error correction method, thereby providing a light field image rotation error correction method

Images