Method for hiding, compressing and transmitting images

An image hiding and transmission method technology, applied in the field of image hiding compression and transmission, can solve problems such as difficult image quality, and achieve the effects of improving security, strong confidentiality, and reducing complexity

Active Publication Date: 2012-09-26
XIAN INSTITUE OF SPACE RADIO TECH
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  • Description
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AI Technical Summary

Problems solved by technology

People want to use data compression without degrading the image quality, but the existing image compression algorithm is difficult to guarantee the quality of the entire image under the condition of large compression ratio

Method used

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  • Method for hiding, compressing and transmitting images
  • Method for hiding, compressing and transmitting images
  • Method for hiding, compressing and transmitting images

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Embodiment Construction

[0032] The present invention will be further introduced below in conjunction with the accompanying drawings.

[0033] The invention divides the original image to obtain the sub-image and the remaining image respectively, compresses the sub-image and the remaining image according to different compression ratios, hides the compressed remaining image into the sub-image, and generates a special noise-like image at the same time , and fuse it with the sub-image with the remaining image hidden, so as to obtain the compressed and confidential image to be transmitted.

[0034] Such as figure 1 As shown, the original image size is assumed to be 512×512, and 8-bit quantization is adopted. The specific method is as follows:

[0035] (1) A sub-image B1 and a remaining image C1 are extracted from the original image A1 using a predetermined target compression ratio R.

[0036] The compressed image size can be determined according to the target compression ratio, and then a plurality of i...

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Abstract

The invention discloses a method for hiding, compressing and transmitting images. The method comprises the following steps: dividing an original image into sub-images and residual image; compressing and hiding the residual images to the sub-images; executing special encryption process; and transmitting processed small class noise images. A receiver generates class noise images via abstracting parameters, and then executing corresponding sub-image descrambling, residual image information abstracting and decompression process to recover the original image. The method has a confidential effect during compressing, avoids the problems of non-ideal compressing performance caused by directly compressing the original image and difficulty in guaranteeing the quality of important parts of the images, and ensures the transmission quality and transmission safety of target images. The method is applicable to the compression and confidential transmission of various images, and can be used for image transmission of ground device to ground device, ground device to space vehicle, space vehicle to ground device, and space vehicle to space vehicle.

Description

technical field [0001] The invention belongs to the technical field of image communication, and relates to an image hiding compression transmission method. Background technique [0002] With the development of science and technology, people have more and more demands for high-resolution images, and they are always trying to improve image resolution. However, with the improvement of image resolution, the amount of data is getting larger and larger, which brings more and more pressure on data transmission and storage. It is very necessary to use data compression methods for data transmission. In addition to space remote sensing images, there are also high-resolution ground images. People want to use data compression without degrading the image quality, but the existing image compression algorithm is difficult to guarantee the quality of the whole image under the condition of large compression ratio. Contents of the invention [0003] The problem solved by the technology of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/26H04N7/68H04N19/36H04N19/467H04N19/895
Inventor 周诠李晓博黎军呼延烺张怡李静玲方海
Owner XIAN INSTITUE OF SPACE RADIO TECH
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