Self-adaption image scaling method for visual-saliency detection based on DCT-domain
An image scaling and self-adaptive technology, applied in image analysis, graphics and image conversion, image data processing, etc., can solve the problem that the image scaling method fails to reflect high-quality visual effects
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[0055] In order to make the purpose, technical method and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0056] In the following embodiments, only one image is taken as an example to describe the DCT domain-based adaptive image scaling method of the present invention. Such as figure 1 As shown, the method includes the following steps:
[0057] Step 100: read in the image in JPEG format.
[0058] Step 101: Partially decode the input JPEG compressed code stream into the DCT domain, divide the image into 8×8 DCT blocks, and extract the color, brightness and texture features of each DCT block respectively.
[0059] Step 102: According to the Euclidean distance between the DCT blocks, a Gaussian model based on the Euclidean distance between the blocks is established, and this Gaussian model is used as a weight coefficient of the difference between the block...
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