Blind image quality evaluation method based on combining gradient signal and Laplacian of Gaussian (LOG) signal
An image quality evaluation and signal technology, applied in the field of image processing, can solve problems such as inability to obtain prediction results and difficulty
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[0063] The present invention is described in further detail below in conjunction with accompanying drawing:
[0064] see Figure 1 to Figure 6 , the algorithm proposed by the present invention utilizes the color information in the image, because the images involved in the following content all refer to the luminance component after the color image is converted to the YUV space. The present invention specifically comprises the following steps:
[0065] (1) Gradient modulus and LOG signal extraction and joint normalization
[0066] In the blind image quality assessment algorithm, the extraction of quality features plays a vital role. The ability of the extracted features to reflect the degree of image degradation directly affects the training of the final prediction model. Since the gradient modulus has shown very effective evaluation performance in image quality evaluation, the present invention extracts effective image quality features starting from these two primary featur...
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