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2018-04-17 04:12:13 -0500 commented answer static build of openCV for windows

Is there a way to build both Shared Libraries and Static Libraries at once?

2018-04-11 23:14:51 -0500 commented answer CMake use -openmp instead of -qopenmp for Intel Compiler

Are you on Windows?

2018-04-08 13:20:57 -0500 commented answer What is the Difference between Installation OpenCV by Using the Pre-built Libraries & by Making Own Libraries from the Source Files ?

Is there a repository of pre built OpenCV (I mean someone has already compiled them)?

2016-06-03 05:05:08 -0500 commented answer Issues by performing non-local means filter operation on 16bit image

Well, that wouldn't do. I wist someone would optimize a 32f Images version.

2016-05-29 11:08:26 -0500 commented answer Issues by performing non-local means filter operation on 16bit image

I wish for Non Local Means for 32f images.

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2015-10-20 11:02:47 -0500 commented question Image Pyramids - Dealing with Arbitrary Dimensions

Anyone could assist?

2015-10-20 10:43:05 -0500 commented answer How to calculate blurriness and sharpness of a given image?

I think he might be talking about a map of the sharpness of an image per pixel.

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2015-07-17 10:19:29 -0500 commented question How to create a marker for watershed algorithm?

If you know the intensity, why wouldn't you use simple thresholding to label the image?

2015-07-16 17:07:56 -0500 answered a question replacement for Watershed ?

You should try Gradient (Region Growing) and Active Contours.

2015-07-16 17:03:11 -0500 commented question Watershed... (am I getting the concept wrong?)

I am not sure I can understand what you wrote. Could you explain it?

2015-07-16 16:58:33 -0500 answered a question image segmentation

Hi, Segmentation of hair is very very tough task.

I think the only algorithms which can handle things like that are those which solve optimization problem (Something like Colorization by Optimization).

I'm not sure they will be fast enough for the average user.

Otherwise you need to take one of the methods you mentioned and optimize it to its best performance point, which is what usually done by commercial companies.

2015-02-26 04:18:15 -0500 commented question De-Convolution without DFT using OpenCV
2015-02-26 04:15:57 -0500 commented question Calculating sharpest image

If you have a concept questions, not specifically OpenCV, would you assist us on this:

2015-02-26 04:14:38 -0500 commented question Computer Vision Stack Exchange Style Forum

We need more assistance to get into the beta phase. Please, just vote up questions with less than 10 up votes.

2014-11-18 10:37:12 -0500 asked a question Fast Non Local Means - `fastNlMeansDenoising`

I'm looking for the code which implements fastNlMeansDenoising (I'm lloking for the C / C++ version).
I searched at the code on GitHub:

Yet, I couldn't find the function itself.
Moreover, is there a place which describes the speed optimizations made?

Thank You.

2014-08-01 10:31:09 -0500 asked a question Image Pyramids - Dealing with Arbitrary Dimensions

Looking at the Image Pyramids tutorial I see the following note:

Notice that it is important that the input image can be divided by a factor of two (in both dimensions). Otherwise, an error will be shown.

I was wondering, How can Image Pyramid can be built for arbitrary image size and keep the "Reproduction" exact (Up to round off errors).

2014-07-27 06:09:21 -0500 commented question Computer Vision Stack Exchange Style Forum

@GilLevi, So please join!

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2014-06-14 14:11:47 -0500 asked a question Computer Vision Stack Exchange Style Forum

Since this site is dedicated to OpenCV code I think many people here would be happy to support a Stack Exchange style site dedicated to computer vision:

Please, support by following, suggesting questions and give score to existing questions to move it to the next phase.

Thank You.

2014-06-14 07:49:46 -0500 commented question Oriented Gaussian Kernel

It sounds like Anisotropic Diffusion, have you tried it?

2014-04-27 12:55:40 -0500 commented answer Beginner guide for SVM

Do you think "SVM for Edge-Preserving Filtering" as in here: would be hard to replicate?

2014-04-27 12:21:43 -0500 answered a question Photoshop's color blend mode
2014-04-15 09:44:52 -0500 commented question Interpolation by Optimization

Anyone? It should be pretty widely used optimization problem.

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2014-04-14 19:45:49 -0500 asked a question Interpolation by Optimization

I have the following interpolation problem:

Given an M by N channel image (1 Channel).
A certain set of pixels are defined as anchors. The rest of the pixels should be interpolated using the original data by minimizing the follwoing cost function:

image description

Where E is the new matrix of interpolated pixels and I is the original image.
Pay attention that the interpolated image equals the original image at the anchor pixels.

The inteprolation weights are given by:

image description

My question is, how can I formalize it in Weighted LS form?
Any optimization could be made to solve it quickly and efficiently?

This interpolation could be used as a minimization for many application in image processing (Edge Preserving Interpolation, Colorization, etc...).

Thank You.

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2012-10-16 02:20:58 -0500 commented answer Smoothing image-better way of doing that

I meant comparing to other implementations, not by itself.

2012-10-15 02:23:17 -0500 commented answer Smoothing image-better way of doing that

Does the OpenCV implementation of the Bilateral Filter considered fast? Thank You.

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2012-10-15 02:10:03 -0500 commented answer Single Image Depth Map / Sharpness Map

Thank for the idea. I will give it a try. Have you seen any other methods to create an estimated "Sharpness Map"? Thanks.

2012-10-06 04:45:49 -0500 commented question Single Image Depth Map / Sharpness Map

I don't need estimation of the distance (Namely, the distance in [Meter]), only that different distances are in different shades of gray. This could be done by estimating the "Sharpness". Since the focus is set to a certain distance anything in a different distance would have a different "Sharpness" (Blur) level according the Depth of Field.

2012-10-06 04:11:02 -0500 asked a question Single Image Depth Map / Sharpness Map


Is there a way using OpenCV to create a gray scale image of the Depth Map / Sharpness Level of an image?
I don't need the "Depth Map" to be accurate, just to set a different shade of gray to a different distances.
Equivalently, set a different gray level according to the sharpness of the area (Since Distance, Focus Distance and Depth of Field set the sharpness).

Any idea?


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2012-09-02 11:08:25 -0500 commented answer Image Data Conversion between Intel IPP and OpenCV

Any specifics related to Intel MKL? Thanks.

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2012-09-01 04:41:09 -0500 asked a question Image Data Conversion between Intel IPP and OpenCV

Hello, I'm using Intel IPP in my project. Yet Intel IPP lacks an image display function. I'd like to use OpenCV to display images.

Is there a built in or an easy way to convert image data from Intel IPP form into OpenCV form? Does anyone have a sample code?

Thank You.