Questions - OpenCV Q&A Forum

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2019-01-20 04:17:54 -0600 Mahajan

What does it mean to have negative pixels stored in an image? How is it useful?

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2019-01-24 11:16:25 -0600 Durdin

HDR merge giving wrong output

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2019-02-05 06:05:39 -0600 H.Nagaty

How to calculate the gross direction for each region or block in an image?

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2019-02-11 08:32:27 -0600 AlexGrishaev

Average pixels along the edge

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2019-04-11 12:37:31 -0600 Lucas Amparo Barbosa

Pre-stitching data

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2019-04-13 01:23:49 -0600 iblasi

compHist with HISTCMP_CORREL method

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2019-04-20 05:19:53 -0600 F.N

Calculating an index for color changing in a sequential "stream" of images.

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2019-04-22 05:52:11 -0600 supra56

Interlaced frame - Presence of odd field's data in even fields

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2019-06-29 03:26:19 -0600 54laosiji

How to segment ROI accurately for images with similar foreground and background

image-processing

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2019-07-13 06:11:35 -0600 Kitnos

Classification method invariante to rotation and machine learning

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2019-08-12 08:01:54 -0600 nameofuser1

Template matching with zero mean normalized cross-correlation

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2019-09-26 11:38:11 -0600 supra56

detecing hough lines on holistically nested edged image

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2019-10-22 07:40:23 -0600 supra56

Tesseract ocr failed to recognize number from number plate images

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2019-12-02 10:42:39 -0600 faghjezu

How to obtain correct homography values?

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2020-01-14 04:46:07 -0600 DoubleR

FastNlMeanDenoisingMulti - Faster way, improve time

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2020-01-18 07:21:38 -0600 Tonystark124

Salt and Pepper impulse Denoising opencv

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2020-01-29 04:19:30 -0600 eLtronicsvilla

How can I re-track an object if track(using optical flow) lost?

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2020-02-24 20:32:21 -0600 redhwan

how to click the video automatically by mouse every 10 sec, OpenCV

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2020-03-03 09:24:58 -0600 eLtronicsvilla

optical flow orientation and magnitude based background and foreground segmentation

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2020-03-16 09:09:48 -0600 LBerger

TypeError: Image data of dtype object cannot be converted to float

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2020-03-24 07:51:14 -0600 supra56

Imwrite saves images as black .

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2020-03-27 04:29:40 -0600 Steven.Dragoz

Detection of Blood Vessels Junctions

image-processing

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2020-04-06 01:37:25 -0600 berak

Checking for Numbers of Blood Vessels Junctions Detected

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2020-04-08 21:54:42 -0600 redhwan

How to extract a feature from OpenCV instead of skimage?

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2020-05-03 04:22:23 -0600 avs123a

Help with OpenCV image classification by ORB features

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2020-06-04 13:25:09 -0600 murkoc

Python Image Processing Continuous Calibration Kernel Issue

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2020-06-05 18:21:44 -0600 zack123

Finding height and width of the object in python (OpenCV)?

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2020-06-09 04:32:51 -0600 samkro

Split a cv::mat into submats based on each containing a contour

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2020-06-23 08:01:35 -0600 astronaut

How to estimate the real distance and angle from 2D Image?

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2020-06-24 23:05:05 -0600 neel19

I am getting this error: Invalid HAAR feature (expected: 'rw.r.x + rw.r.width <= W'), where > 'rw.r.x + rw.r.width' is 22 > must be less than or equal to > 'W' is 16

135 questions

What does it mean to have negative pixels stored in an image? How is it useful?

HDR merge giving wrong output

How to calculate the gross direction for each region or block in an image?

Average pixels along the edge

Pre-stitching data

compHist with HISTCMP_CORREL method

Calculating an index for color changing in a sequential "stream" of images.

Interlaced frame - Presence of odd field's data in even fields

How to segment ROI accurately for images with similar foreground and background

Classification method invariante to rotation and machine learning

Template matching with zero mean normalized cross-correlation

detecing hough lines on holistically nested edged image

Tesseract ocr failed to recognize number from number plate images

How to obtain correct homography values?

FastNlMeanDenoisingMulti - Faster way, improve time

Salt and Pepper impulse Denoising opencv

How can I re-track an object if track(using optical flow) lost?

how to click the video automatically by mouse every 10 sec, OpenCV

optical flow orientation and magnitude based background and foreground segmentation

TypeError: Image data of dtype object cannot be converted to float

Imwrite saves images as black .

Detection of Blood Vessels Junctions

Checking for Numbers of Blood Vessels Junctions Detected

How to extract a feature from OpenCV instead of skimage?

Help with OpenCV image classification by ORB features

Python Image Processing Continuous Calibration Kernel Issue

Finding height and width of the object in python (OpenCV)?

Split a cv::mat into submats based on each containing a contour

How to estimate the real distance and angle from 2D Image?

I am getting this error: Invalid HAAR feature (expected: 'rw.r.x + rw.r.width <= W'), where > 'rw.r.x + rw.r.width' is 22 > must be less than or equal to > 'W' is 16

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