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Question
How to add 10dB or 30 dB noise to an image?
I want to add noises in an image so that the resulting PSNR becomes 10dB or 30 dB? How can I add noise of specified PSNR to a...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
How can I estimate the variance of noise of an given image?
An input image is given, I am supposed to estimate the variance of noise of that image.
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
How to apply adaptive soft threshold denoising on an image?
I want the code matlab code to do the following 1. Calculate the DWT of the image. 2. Threshold the wavelet coefficients.(Th...
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
How can I reconstruct a color image to get its original version using wavelet?
Wavelet is considered to be completely invertible. That is if an image is decomposed using wavelet. then the image can be get ba...
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
How to find the intensity of each pixel of an image?
Consider an image sample.jpg Now I want to count the number of pixels on that image have intensity value larger than 200(white ...
plus de 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
how to find the width of edges in matlab?
I am able to find the edges of an image using sobel or canny filter. But I cant calculate the width of the edges. Actually I ...
plus de 12 ans il y a | 1 réponse | 0
1
réponseQuestion
how to replace the center pixel of a 3X3 window with the min difference among its surronding pixels in matlab?
I want to replace the center pixel of a 3x3 window filter with the minimum difference among its surrounding pixels. I want to ...
plus de 12 ans il y a | 2 réponses | 0
2
réponsesQuestion
Anyone please explain how wavelet decomposition works (in case of image). And the concept of coefficient images .
Anyone please explain how wavelet decomposition works (in case of image). And the concept of coefficient images .
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
I am applying dtw2 to an image (512*512)and after level 1 decomposition, I am getting approximation(256*256) and other details as coefficient images. How can I obtains actual images rather the coefficient images?
I am applying dtw2 to an image (512*512)and after level 1 decomposition, I am getting approximation(256*256) and other details a...
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
How to construct image representation after applying low pass and high filter along the coloum using the dwt2 and before performing downsampling?
I am applying a discrete wavelet transformation on an image(suppose of size512*512) . according to the theory first the low ...
plus de 12 ans il y a | 1 réponse | 0
0
réponseQuestion
I am applying dtw2 to an image (512*512)and after level 1 decomposition, I am getting approximation(256*256) and other details. How can I scale up only the 256*256 approximation to 512*512 size?
I am applying a discrete wavelet transformation on an image(suppose of size512*512) . Then I am getting 4 subband images after l...
plus de 12 ans il y a | 1 réponse | 0
