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使用Matlab编程实现发送端信源编码(图像压缩)和接收端信源解码(图像重建),其中的编解码算法可采用基于DCT变换的JPEG图像压缩标准;测试图像加噪,然后对去噪后的图像进行压缩与重建,分析压缩性能;研究基于下采样和内插的图像压缩算法;可将8bit/pixel灰度图像扩展至24bit/pixel彩色图像,或者采用无损压缩算法对图像压缩。-Sender using the Matlab programming source coding (image compression) and the r
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该程序利用离散余弦变换(DCT)对JPEG图像进行压缩与解压缩-The program using the discrete cosine transform (DCT) for JPEG image compression and decompression
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对原始灰度图像 Lena_gray.bmp进行图像压缩实验 1.对此图进行 8×8 DCT 变换后,分别只保留 DC系数,以及保留前 4、8、16 个变换系数(DC+AC) ,然后再分别进行 IDCT 变换,比较结果。 2.可以使用 Matlab - Image Processing Toolbox 中的函数实现。-gray image of the original image compression Lena_gray.bmp an experiment. This diagram 8 8
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DCT转换用原图图像压缩的适合初学者,具有一定的参考价值-DCT transform image compression using artwork suitable for beginners, has a certain reference value
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用matlab实现图像的DCT变换,将高频细节点忽略达到压缩的目的-Using matlab image DCT transformation, the high-frequency detail to achieve the purpose of compression point ignored
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CODE FOR COLOR IMAGE COMPRESSION USING QUANTIZATION ALORITHM. VECTOR QUANTIZATION.
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DCT图像压缩:此源代码变换域系数选取采用区域编码,通过非零区域的选择,呈现不同的恢复效果-DCT image compression: This source code transform domain coefficients using the selected coding region, by choosing a non-zero area, showing the effect of different recovery
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DCT变换:变换域系数选取采用阈值编码,:阈值越小,图像恢复效果越好,但压缩效果差,一般取在5-10 即可很好的获得恢复图像信息。-DCT transform: transform domain coefficients selected using the threshold coding: the smaller the threshold value, the better the image restoration, but the compression is poor, and ge
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利用dct变化对图像进行压缩,可以根据感谢量化矩阵改变压缩率.-By using DCT changes on image compressing, can according to thank quantization matrix change compression ratio.
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matlab code for image compression using DCT and DWT
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