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codefile
- 对图像进行二维离散小波变换, 变换级数大于等于3级, 并进行重构, 最后计算重构图像的峰值信噪比(PSNR).-images of two-dimensional discrete wavelet transform, transform Series is greater than or equal to 3, and reconstruction, Image Reconstruction final calculation of the peak signal-to-noise rati
calculationpsnr
- 利用小波变换进行图像去噪,计算去噪图像的峰值信噪比,简单容易操作。-Image denoising using wavelet transform, image denoising PSNR calculation, simple and easy to operate.
MyDwt2D
- 对图像进行二维离散小波变换, 变换级数大于等于3级,然后统计系数中0的个数(百分比表示),并进行重构, 最后计算重构图像的峰值信噪比(PSNR). 里面还附上了我写的实验报告,对大家理解Mallat算法和图像压缩很有帮助-Image two-dimensional discrete wavelet transform, transform series greater than or equal to 3, and then statistics of the number of c
JPEG2000_9_7_002.pdf
- 基于实数的二进制表示法,把CDF(Cohen,Daubechies and Feauveau)9/7双正交小波基的提升系数化为二进制,采用简单的移位一加操作代替结构复杂的浮点乘法器,从而实现了JPEG2000中9/7离散小波变换的定点计算.相对于浮点计算法,移位一加操作最大的优点是计算简单,特别易于超大规模集成电路实现,因而使硬件实时处理图像信号成为可能.实验仿真结果表明:在低压缩比的情况下,用移位一加操作重构的图像,其峰值信噪比(PSNR)只比浮点法低0.10 dB,当压缩比增大时,其PSNR
DWT2D
- 对图像进行二维离散小波变换, 变换级数大于等于3级,然后进行阈值化处理(阈值约为10左右),再统计系数中0的个数(百分比表示)并进行重构, 最后计算重构图像的峰值信噪比(PSNR). -Two-dimensional discrete wavelet transform image transformed series is greater than or equal to 3, and then processing thresholding (threshold of about 10 or