A Data Compression Transmission Method Based on Image Transformation and Image Watermark

An image watermarking and data compression technology, applied in the field of image processing, can solve the problem of unsatisfactory image compression effect of pixel continuity, and achieve the effect of ensuring data compression quality, avoiding complexity, and improving recovery quality.

Active Publication Date: 2016-08-17
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

The existing method does not distinguish the image content, and uses the same compression method for all images, which is very unsatisfactory for images with complex textures and poor pixel continuity.

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  • A Data Compression Transmission Method Based on Image Transformation and Image Watermark

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Embodiment Construction

[0034] Specific embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0035] The invention utilizes technologies such as image decomposition, index threshold setting, and image watermarking to perform function transformation on sub-images whose PSNR does not meet the standard, and embeds watermarks and transformation functions into transformed images for transmission. The receiving end can correctly extract the watermark and transformation function from the image, and perform inverse transformation to restore the original image data. Without affecting the quality of image compression and recovery and without increasing the amount of image data, an image compression method with superior compression performance is provided, and the compression effect of the existing data compression method is obviously improved. The method of the present invention also protects the original image, so that others can only d...

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Abstract

The invention discloses a data compression transmission method based on image transformation and image watermark. By first decomposing the image and setting the index threshold, sub-images meeting the index are not transformed; The degree becomes flatter, the two sub-images are combined to form a complete image, watermark and function type are embedded in it, and the image with watermark is compressed and transmitted. The receiving end extracts the watermark from the watermarked image through decompression, restores the original transformed sub-image, and then obtains the original image through inverse transformation. The invention guarantees that the quality of the restored image under the given compression ratio meets the specified requirements, and is obviously better than the result of direct data compression. At the same time, the present invention embeds the watermark information of the image into the image for transmission without affecting the quality of image compression and recovery and without increasing the amount of transmitted data, thereby improving the efficiency of image transmission and providing convenience for image application.

Description

technical field [0001] The invention relates to a data compression method based on image transformation and image watermark, belonging to the technical field of image processing. Background technique [0002] Data transmission and image processing are important research topics in the field of communication at present. With the development of science and technology, people's demand for high-resolution images is increasing, and data compression is imperative. [0003] Data compression is divided into lossy compression and lossless compression methods. The lossy compression method has a relatively large compression ratio, but there is a certain amount of information loss between the restored image and the original image after compression. As long as the subjective and objective evaluation indicators meet the requirements, it does not have much application in practice. Influence. There is no loss of information between the restored image and the original image after compressio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/467H04N19/48G06T3/00
Inventor 周诠张怡方海黎军呼延烺魏佳圆李静玲崔涛梁薇
Owner XIAN INSTITUE OF SPACE RADIO TECH
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