Questions - OpenCV Q&A Forum

166

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no

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-2

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2017-09-06 09:43:47 -0600 Loubna

How can I detect colored markers on the fingers through the camera?

down-voted

97

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no

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-2

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2017-11-27 21:26:20 -0600 Zaxby

I am trying to create a program that will compare a video image to a library of images. Is this possible?

down-voted

605

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no

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-2

votes

2018-07-05 12:04:08 -0600 OpenCVNoob69

How do you use OpenCV to find horizontal angle and vertical angle from the center of an image to the center of a rectangular contour?

262

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no

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-1

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2018-07-11 04:12:57 -0600 psanjaya

cant read image from .cu

96

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no

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-2

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2018-09-02 00:03:49 -0600 vitoverflow

I want to create an array for the letters in the given picture in python what can i do?

down-voted

430

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no

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-2

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2019-10-13 05:17:10 -0600 Ashraful12

How to get GPS and sensor data from .264 video file? (used by DVR)

129

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no

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-1

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2020-04-08 01:42:27 -0600 Srini9

Suggestion on a usecase

1k

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no

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-2

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2020-10-07 07:10:32 -0600 supra56

How to show the offset difference value between base image and reference image in OpenCV?

1k

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no

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-2

votes

2020-11-20 02:14:39 -0600 kilwa

calculating the area dimension in image

python#opencv

4k

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no

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-2

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2020-11-21 14:28:23 -0600 berak

cv2.error: OpenCV(4.4.0)error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor', 14errors module cv2

340

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no

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-2

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2020-11-24 21:33:38 -0600 gentle_rain

How can I segment text from images with complex backgrounds?

278

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-1

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2013-03-05 00:08:25 -0600 Alexander Smorkalov

head mounted pov cam

hardware

1k

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no

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no

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2013-03-13 04:41:11 -0600 sammy

camshift + kalman filter

903

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no

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-1

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2013-04-19 18:13:29 -0600 shobhitkukreti

How to Integrate Stasm library with Visual studio and OpenCV2.4.4

160

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no

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-1

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2013-04-20 09:45:08 -0600 Vuong Bui

stutters screen

opencv-2.2

905

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no

answers

-1

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2013-06-02 16:40:32 -0600 hasnain786

Thresholding an image in iOS

threshold

8k

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no

answers

-1

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2013-07-30 09:42:02 -0600 droidCV

Overlay png image over jpg using openv Java API

4k

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no

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-1

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2013-08-14 07:52:55 -0600 Jose Salvador

How calculate and use FOV correctly

425

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no

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-1

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2013-09-16 09:24:07 -0600 samkhan13

VideoCapture not working even in opencv 2.4.6.1

181

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no

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-1

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2013-10-11 13:32:43 -0600 joeish80829

Where can i find documentation or any info on how to use/what is CV_MAT_MAGIC_VAL?

opencv
C

342

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no

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-1

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2013-10-11 18:12:00 -0600 joeish80829

Getting a few errors redefining this opencv macro in c?

C
opencv

203

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no

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-1

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2013-10-18 09:39:28 -0600 joeish80829

What is the function of LOOP in this OpenCV C for next statement?

C

235

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no

answers

-1

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2013-10-18 16:09:26 -0600 joeish80829

Can I use cvUseOptimized with normal OpenCV or do I have to have IPP loaded

#opencv
C

744

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no

answers

-1

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2013-10-21 21:46:36 -0600 joeish80829

Using ROI from camera feed as Template for cvMatchTemplate

C
#opencv

122

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no

answers

-1

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2013-11-08 19:58:35 -0600 joeish80829

Could use help editing this C OpenCV code so it will run ....uses CvGraph

#opencv
#c

99

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no

answers

-1

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2013-12-11 10:34:25 -0600 ati

how to get the orientation and motion of the object

#opencv#c++

239

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no

answers

-1

votes

2013-12-20 09:38:08 -0600 Flart

average of some frames

opencv
c++

1k

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no

answers

-1

votes

2013-12-23 06:27:35 -0600 shim joong seob

i want to convert bitset descriptor -> cv::Mat

bitset

120

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no

answers

no

votes

2014-01-08 15:12:52 -0600 berak

How to open next/prev image with key pg dn/pg up

#Next

136

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no

answers

-1

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2014-01-27 15:10:52 -0600 kkdirvi

12,357 questions

How can I detect colored markers on the fingers through the camera?

I am trying to create a program that will compare a video image to a library of images. Is this possible?

How do you use OpenCV to find horizontal angle and vertical angle from the center of an image to the center of a rectangular contour?

cant read image from .cu

I want to create an array for the letters in the given picture in python what can i do?

How to get GPS and sensor data from .264 video file? (used by DVR)

Suggestion on a usecase

How to show the offset difference value between base image and reference image in OpenCV?

calculating the area dimension in image

cv2.error: OpenCV(4.4.0)error: (-215:Assertion failed) !_src.empty() in function 'cv::cvtColor', 14errors module cv2

How can I segment text from images with complex backgrounds?

head mounted pov cam

camshift + kalman filter

How to Integrate Stasm library with Visual studio and OpenCV2.4.4

stutters screen

Thresholding an image in iOS

Overlay png image over jpg using openv Java API

How calculate and use FOV correctly

VideoCapture not working even in opencv 2.4.6.1

Where can i find documentation or any info on how to use/what is CV_MAT_MAGIC_VAL?

Getting a few errors redefining this opencv macro in c?

What is the function of LOOP in this OpenCV C for next statement?

Can I use cvUseOptimized with normal OpenCV or do I have to have IPP loaded

Using ROI from camera feed as Template for cvMatchTemplate

Could use help editing this C OpenCV code so it will run ....uses CvGraph

how to get the orientation and motion of the object

average of some frames

i want to convert bitset descriptor -> cv::Mat

How to open next/prev image with key pg dn/pg up

KNN Classifier Problem

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