Filtering based imaging system dynamic range extension method
A technology of dynamic range expansion and imaging system, which is applied in the parts of TV system, image communication, color TV, etc., can solve the problems of image fusion result influence, complex system, expensive price, etc., and realize low cost, The effect of simple system structure and wide application range
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[0030] A filter-based imaging system dynamic range expansion method proposed by the present invention, the specific implementation steps are as follows:
[0031] Step 1: According to the luminescent spectral characteristics of the target scene, the spectral response characteristic curve of the color image sensor or multi-color filter coating or lens, select an appropriate narrow-band filter for spectral selection, so that the approximate monochromatic light image can be filtered in different colors , the intensity attenuation coefficients are quite different; figure 2 , image 3 shown;
[0032] Step 2: Coupling the CCD or CMOS image sensor with the narrow-band filter, the possible coupling structure is as follows figure 1 As shown; in the figure, 1 is an imaging lens, 2 is an image sensor, 3 is a color microlens, and 4 is a narrow-band filter;
[0033] Step 3: For the coupled imaging system, image acquisition is performed under different light intensities, and sub-images c...
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