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2019-11-22 01:58:35 -0500 commented question setUseOptimized()

Hi, yes I know the documentation. Hovever, when I have two applications (two projects) in one Solution file, have I se

2019-11-21 10:54:17 -0500 asked a question setUseOptimized()

setUseOptimized() Hi, I've a simple question concerning setUseOptimized() function. I'm working with Visual Studio17 a

2019-07-18 01:46:15 -0500 commented question How to grow bright pixels in grey region?

you can try a floodfill operation

2019-07-09 02:41:44 -0500 commented question Clean ID card picture to use a person photo for facial recognition

Ok, than try out the inpainting and Image Denoising function from OpenCV directly Inpainting OpenCV Image Denoising

2019-07-09 02:39:49 -0500 commented question Clean ID card picture to use a person photo for facial recognition

Ok, than try out the inpainting function from OpneCV directly Inpainting OpenCV

2019-07-08 09:41:42 -0500 commented question What is a good alternative to RANSAC

you can try out a GraphCut RANSAC proposed by Daniel Barath and Jiri Matas at CVPR 18' Paper and GitHub. The approach is

2019-07-08 02:36:26 -0500 commented question Clean ID card picture to use a person photo for facial recognition

I would try out image restauration and image inpainting like here or here but which is not a OpenCV specific problem.

2019-07-02 05:17:30 -0500 answered a question Detect Closed loop through from the image

Hi, you can check if the contour area is bigger than the perimeter: for contour in contours: if cv2.contourAr

2019-07-02 04:32:35 -0500 answered a question How to liquify the contours of the objects?

Hi, you can try out some simple median filtering or oil painting Effects, which can be found here or here Best

2019-07-01 06:19:28 -0500 commented answer Segment the "cupules" of a prehistoric engraving.

The problem is, that Otsu do not select the optimal threshold in this case. I would suggest to try out different auto th

2019-06-27 08:10:18 -0500 answered a question Segment the "cupules" of a prehistoric engraving.

Hi, you can try some simple preprocessing techniques, before thresholding, but these depends mostly on the images you h

2019-01-23 05:07:07 -0500 commented answer Edge-preserving alternatives to Bilateral Filters

you can also try some implementations found by google. see here or here. Give attention to how often you apply the filte

2019-01-22 20:38:30 -0500 received badge  Nice Answer (source)
2019-01-21 02:51:33 -0500 answered a question Edge-preserving alternatives to Bilateral Filters

you can use an anisotropic diffusion filter developed by Perona-Malik but it could be slow as well. try it out! see her

2019-01-10 06:36:40 -0500 answered a question How to reduce noise from technical drawings?

Hi, interesting problem and I think using morphological operations would not work here. I don't know if it could work

2018-12-19 05:16:50 -0500 edited answer Mean of the distance transform

Hi, to find the width of a contour for each position is not so an easy task but there exist approaches. You can do it

2018-12-19 04:04:14 -0500 edited answer Mean of the distance transform

Hi, to find the width of a contour for each position is not so an easy task but there exist approaches. You can do it

2018-12-19 04:03:52 -0500 answered a question Mean of the distance transform

Hi, to find the width of a contour for each position is not so an easy task but there exists approaches. You can do it

2018-12-18 10:15:43 -0500 commented question Output view full of translated image

this is also a good tutorial how to translate and rotate images correctly

2018-12-18 03:26:03 -0500 edited answer Using openCV python to detect concrete cracks

Hi, an easy approach could be: 1) remove the inhomogeneous background illumination apply a big gaussian bluring and s

2018-12-17 06:06:20 -0500 edited answer Finding distance between skeleton and boundary

Hi, First I would calculate the normal vector for each white line. Afterwards, iterate for each white point along the c

2018-12-17 05:37:48 -0500 answered a question Finding distance between skeleton and boundary

Hi, First I would calculate the normal vector for each white line. Afterwards, iterate for each white point along the c

2018-12-17 03:15:36 -0500 edited answer Using openCV python to detect concrete cracks

Hi, an easy approach could be: 1) remove the inhomogeneous background illumination apply a big gaussian bluring and s

2018-12-17 03:15:11 -0500 edited answer Using openCV python to detect concrete cracks

Hi, an easy approach could be: 1) remove the inhomogeneous background illumination apply a big gaussian bluring and su

2018-12-17 03:10:15 -0500 answered a question Using openCV python to detect concrete cracks

Hi, an easy approach could be: 1) remove the inhomogeneous background illumination apply a big gaussian bluring and su

2018-03-23 03:35:49 -0500 answered a question How to detect red object shape?(square shaped object red in color)

Hi, you can try to calculate the thinnes ratio: T = 4*Pi ( Area/Perimeter^2) this measure has a maximum of 1, which cor

2018-03-21 04:12:43 -0500 commented question Homography transformation + scale

Hi, this link should be helpful

2018-03-21 03:34:45 -0500 answered a question Algorithm recommendation for texture analysis/segmentation

Hi, if you only need the area of the spherical objects I would first apply a median filter: Afterwards you can use a

2018-03-21 03:20:04 -0500 commented question Algorithm recommendation for texture analysis/segmentation

Deep learning is not the solution for all. At least you will need thousand and much more images for learning which is no

2018-03-14 03:41:00 -0500 answered a question Finding the max and min x,y location of a mask

Hi, you can calculate the extreme points of the contour. leftmost = tuple(cnt[cnt[:,:,0].argmin()][0]) rightmost = tu

2018-03-13 07:41:37 -0500 answered a question Bundle Adjustment

Hi, I've found an OpenCV wrapper (cvsba) for the Sparse Bundle Adjustment library (sba), which was developed by M. Lour

2018-02-14 05:07:06 -0500 answered a question Detect crossing lines at a single point

Hi, try out different filters for preprocessing. result of median filter or result of variance filter: based on t

2018-02-09 05:18:30 -0500 commented answer Bottle Detection

I havn't tried it but there are lot of plotting frameworks in c++ looks simple: https://github.com/lava/matplotlib-cpp

2018-02-09 05:17:22 -0500 commented answer Bottle Detection

I havn't tried it but there are lot of plootting frameworks in c++ looks simple: https://github.com/lava/matplotlib-cpp

2018-02-09 05:08:31 -0500 commented answer Bottle Detection

are you working in c++ or python or...?

2018-02-07 10:23:02 -0500 commented question Bottle Detection

it's the reduce function

2018-02-06 02:44:23 -0500 answered a question Detect blur, sharpness of the single image

Hi, this paper is also interesting, where they use a Harr Wavlet transform to determine bluriness and sharpness: Blur

2018-02-05 10:37:00 -0500 received badge  Commentator
2018-02-05 10:37:00 -0500 commented answer Hello all, currently i'm trying to run binary file of a paper "Scene Conditional Background Update for Moving Object Detection in a Moving Camera" but i'm getting error 0xc000007b.

open the exe file with the depency walker on your computer and have a look which dlls are refered http://www.dependency

2018-02-05 10:34:17 -0500 commented answer Hello all, currently i'm trying to run binary file of a paper "Scene Conditional Background Update for Moving Object Detection in a Moving Camera" but i'm getting error 0xc000007b.

I've downloaded the file and was not able to run it because opencv_video249.dll is missing. It could be that on your com

2018-02-05 10:23:16 -0500 answered a question Hello all, currently i'm trying to run binary file of a paper "Scene Conditional Background Update for Moving Object Detection in a Moving Camera" but i'm getting error 0xc000007b.

Hi, I think you have mixed up a 32bit environment with a 64bit one, so check your environment

2018-02-01 03:47:09 -0500 answered a question Extract the foreground of a selfie

Within a selfie the face should be always in foreground therefore, apply a face detection and select the face region as

2018-02-01 02:34:08 -0500 received badge  Critic (source)
2018-02-01 02:31:10 -0500 answered a question Assigning unique identifier to shapes in real-time

Hi you could use center of gravity of the contour: cx = [] cy = [] pos = [] for i in range(0, len(conto

2018-01-29 03:05:37 -0500 answered a question how to know the area of the overlapping rectangles?

"The formula for intersection will be SI= Max(0, Min(XA2, XB2) - Max(XA1, XB1)) * Max(0, Min(YA2, YB2) - Max(YA1, YB1))

2018-01-19 02:30:32 -0500 answered a question Bottle Detection

Hi, the illumination is not so important, but they should be constant (avoid interfering light). In a first step I wo

2018-01-16 08:28:52 -0500 edited answer Help! pixel distance from a plane if the plane is not horizontal

Hi, first Question: a standard calibration is necessary (like chessboard or circles grid) because you have to eliminate

2018-01-16 08:25:44 -0500 edited answer Help! pixel distance from a plane if the plane is not horizontal

Hi, first Question: a standard calibration is necessary (like chessboard or circles grid) because you have to eliminate

2018-01-16 03:42:18 -0500 answered a question question of reading pixel

you also have to learn C++, see e.g. C++ Templates <uchar> is a template parameter and means that img_pyr2 must b

2018-01-16 01:52:49 -0500 answered a question Help! pixel distance from a plane if the plane is not horizontal

Hi, first Question: a standard calibration is necessary (like chessboard or circles grid) because you have to eliminate