A method for synthesizing color images from images of three-line array cameras

Abstract

A method for synthesizing color images from three-line-array camera images, in order to overcome many problems existing in the prior art when synthesizing three-channel color images from single-band images of three-line-array cameras, including Three-line array camera calibration parameters to calculate the number of pixel offsets, select the main image and create a three-way color image of the same size as the main image, image segmentation, sift feature extraction by block, sift feature matching by block, image sharpening, A single-band image is sampled in blocks to a three-channel color image. The present invention overcomes the shortcomings of the existing three-line array image synthesis technology, calculates the number of image offset pixels between bands through calibration parameters, and flexibly divides single-band images into blocks, achieving high efficiency, high precision, uniform error distribution, and overall The purpose of strip color image synthesis is to adapt to the synthesis of three-line array images with various topography and multiple single-band angles, and also reduce the hardware requirements to a certain extent.

Description

technical field [0001] The invention relates to an algorithm for synthesizing color images of three-line-array camera images, in particular to a method for block matching and block sampling to synthesize three-channel color images based on payload camera calibration parameters, so as to be applicable to different terrain features and scanning lines in various bands. Algorithm for synthesizing high-quality color images from the entire band of three-line array camera images with a certain angle range between them. Background technique [0002] At present, in the process of using the three-line array camera to obtain the orthophoto image (DOM) of the survey area, it is necessary to synthesize the single-band image to generate a color image, and then obtain the color DOM image or pseudo-color result image through geometric correction, which is more suitable for use. It is more in line with the real appearance of the actual land features and landforms, and can also obtain a wider...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the accuracy, efficiency, and error distribution existing in the prior art when synthesizing single-band images of three-line array cameras into three-channel color images, the present invention needs to be cut into small-format images, and then re-synthesize the color images to give the subsequent measurement area the entire frame. The production of projective images brings the problem of difficult splicing, and a method for synthesizing color images from three-line array camera images is provided.

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