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Questions tagged [image-processing]

The tag has no usage guidance.

7
votes
1answer
959 views

Average intensity of an gray image

Suppose i have a 400*300 gray scale image.Now I want to scan each line horizontally and make the average of that line 128,such that the values get scaled as per their difference from mean(128) which ...
2
votes
0answers
75 views

ImageJ alternative for Ruby on Rails Development [closed]

I have an analysis management web system developed using Ruby on Rails and I need to analyse an uploaded image in my system. Using Java I used to have ImageJ included im my projects. Since I'm new in ...
1
vote
0answers
74 views

How to enhance scans of golden emboss?

I am looking for smooth way to enhance scans of golden emboss on. For now it takes sometimes hours to select out the golden part and then manipulate into suitable color. But I hope to learn some more ...
7
votes
1answer
2k views

Detect in-focus regions of an image

Is there any strategy to detect the region of an image that is sharp and in-focus, in order to separate the out-of-focus background? I've tried using edge detection methods but without any success. ...
7
votes
3answers
299 views

Changing image so it would look like through colorful glasses

I am currently working on some simple pixel shader in HLSL. I send to shader texture and I want to make it more colorful (something like in the picture below). In the picture 1 there is original ...
7
votes
3answers
275 views

How to denoise video?

Video noise is random and not correlated in time. I assume, the best method is using wavelet denoise in this case, right? If yes, how is wavelet denoise implemented for video? Is there something to ...
39
votes
4answers
25k views

How is Gaussian Blur Implemented?

I've read that blur is done in real time graphics by doing it on one axis and then the other. I've done a bit of convolution in 1D in the past but I am not super comfortable with it, nor know what to ...