A method for color visualization of hyperspectral images

Abstract

The invention discloses a color visualization method of a high spectral image. The spectral curve of each pixel in the high spectral image is extracted; the smoothed spectral curves are combined with a color matching function of a CIE1931 standard chroma system to calculate CIEXYZ tri-stimulus values, the CIEXYZ tri-stimulus values of each pixel are used to calculate the brightness, chroma and tone of a uniform color sensing space CIEL*C*h* according to white points of a display device, and the brightness coefficient, the chorma coefficient and the tone coefficient are set according to requirements for color reproduction; and the digital drive value of each pixel is calculated according to the modulated brightness, chroma and tone, the gamma coefficients of three channels of the display device as well as tri-stimulus values of primary color, and color visualization is realized. The method can be used to realize color visualization that satisfy perception characteristics of the human visual system, solves the problem that the visual effect differs due to different display devices, carries out adjustment according to different reproduction requirements, and is high in adaptability and conducive to interpretation and application of the high spectral image.

Description

Technical field [0001] The invention belongs to the technical field of hyperspectral imaging, and in particular relates to a method for color visualization of hyperspectral images. Background technique [0002] In recent years, the hyperspectral imaging technology that combines imaging technology and spectroscopy technology has developed rapidly and has been widely used in military and civilian fields. Therefore, processing and analysis of hyperspectral images collected by it has important application value. The hyperspectral image simultaneously characterizes the spatial information and continuous spectrum information of the measured area, that is, each spectral segment corresponds to a two-dimensional image, and each pixel of the image can extract a spectral curve. How to effectively analyze the hyperspectral image It is one of the key issues in the field of hyperspectral imaging technology to express the rich information carried in a visual form and accurately interpret and ap...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a color visualization method for hyperspectral images, aiming to solve the problem that the existing hyperspectral image color visualization effects vary from device to device, easily causing color distortion, and affecting the accurate interpretation of the measured area

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