Method and apparatus for synthesizing visible light image and panchromatic image

Abstract

The invention provides a method and an apparatus for synthesizing a visible light image and a panchromatic image. The method comprises: a visible light image Im_RGB and a panchromatic image Im_P are input; the visible image Im_RGB is transferred to YCbCr space to obtain the converted image Im_YCbCr. The luminance component Im_Y image and the panchromatic image Im_P are synthesized to obtain the luminance component output image Im_Y_out. The synthesized image Im_YCbCr_out is obtained. The synthesized image Im_YCbCr_out is turned back to RGB space, and the output image Im_RGB_out is obtained; the output image Im_RGB_out is output; the device comprises an image input module, a spatial conversion module, an image synthesis module and an image output module. A method and apparatus for synthesizing a visible light image and a panchromatic image synthesize a luminance component and a panchromatic image by an averaging method, on the premise of maintaining high spatial resolution, the random noise is filtered, and the signal-to-noise ratio of the composite image is improved. Moreover, the scheme of the present application can better maintain the color characteristics of the image when theimage has rich color information.

Description

technical field [0001] The embodiments of the present application relate to the technical field of image processing, and in particular to a method and device for synthesizing a visible light image and a full-color image. Background technique [0002] In some shooting scenarios, the camera can capture both a visible light image and a panchromatic image of the same scene. Among them, the visible light image is composed of three channels of R / G / B, which has high spectral resolution and contains rich color information; the panchromatic image has only one P channel, which has high spatial resolution. The image has high sensitivity to incident light of all wavelengths of visible light, which in turn increases the sensitivity to light brightness. Therefore, by combining visible light images and panchromatic images, images with high spatial resolution and rich color information can be obtained. [0003] In the prior art, the method of synthesizing visible light images and panchroma...

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Problems solved by technology

[0009] This application provides a method and device for synthesizing visible light images and full-color images, which have solved the problems of low signal-to-noise ratio and random noise that cannot be effectively filtered out when obtaining high-resolution images in the prior art. On the basis of noise, the color characteristics of the image are maintained, and the synthesis process is stable and fast

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