Questions - OpenCV Q&A Forum

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2018-04-19 07:17:46 -0600 nabahahaha

Use OpenCV in python to detect text blocks and then crop them to save as separate images

python

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1

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2018-04-21 02:27:28 -0600 berak

OpenCV(3.4.1) Error: ValueError

348

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2018-04-23 01:29:41 -0600 hovnatan

cv::connectedComponents stuck or seg fault

177

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2018-04-25 08:12:43 -0600 promach

Problem reading in image correctly [closed]

imread

245

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2018-04-26 17:16:13 -0600 mrpmorris

How can I detect the difference between a neutral face and a facial gesture of the user's choice?

118

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1

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-1

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2018-04-28 08:21:48 -0600 holger

Use OpenCV to create a system that integrates a user uploaded image into a pre-made video.

191

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2018-04-30 11:47:01 -0600 jane

how to do space allocation using Skeleton algorithm ? [closed]

612

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2018-05-01 08:56:06 -0600 Nimya

Import Error [closed]

python
macos

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2018-05-01 18:54:45 -0600 aIex

Adding contrib modules to OpenCV-3.4.1 without CMake [closed]

188

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2018-05-02 01:25:14 -0600 berak

Process video in OpenCV, without playing it

110

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1

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2018-05-03 03:48:07 -0600 berak

OpenCV: How to identify a face in scalable way?

opencv

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2018-05-02 17:18:03 -0600 mssm1996

OpenCV Detecting Traffic Light green signal

96

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2018-05-02 23:10:17 -0600 Gtrxone

How to compare an image with another image and check whether similar or no? [closed]

241

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no

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2018-05-03 12:51:24 -0600 sjhalayka

Blob coloring not blob detection

201

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2018-05-06 11:50:04 -0600 Aadhi

How can i read alpha numeric Register no from multiple Identity card from android app using video mode [closed]

356

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2018-05-15 13:37:58 -0600 opalmirror

how can i upgrade the detection of cv.findContours [closed]

479

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1

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2018-05-08 08:04:13 -0600 StevenPuttemans

Grouping images by a person appearing on them

python

325

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2018-05-08 14:31:08 -0600 Mus

WHAT IS THE BEST SOLUTION TO DO TRAFFIC LIGHT DETECTION USING OPENCV? [closed]

200

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1

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-1

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2018-05-09 22:59:02 -0600 Santhosh1

Which colour space is best for extracting real world objects?

colourspace

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1

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no

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2018-05-10 04:41:33 -0600 berak

CV::MAT assignment operator "="

526

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2018-05-10 16:04:49 -0600 kyl293

[Question/Java/Help] how to get openCV to run in a jar?

java
jar

284

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1

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2018-05-12 13:54:00 -0600 berak

Creating Bounding boxes for contours

c++
opencv

156

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2018-05-13 13:33:51 -0600 Toutou

I want to calculate the yellow pixels in a YCbCr image (open cv) with python how can I write this code

YCbCr

513

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1

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-1

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2018-05-14 10:21:05 -0600 berak

'cv2.FlannBasedMatcher' object has no attribute 'knnMatches'

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2018-05-17 03:38:07 -0600 masterenol

Is OpenCV for Python or C++ a good library to use for detecting the blinking rate/frequency of an LED diode lights?

1k

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2

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2018-05-19 19:15:32 -0600 Marko5280

SOLVED How do I correctly install OpenCV 3.4.1?

2k

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1

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-1

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2018-05-17 13:00:27 -0600 berak

C++ Using OpenCV, create GIF from images or Video file

148

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-1

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2018-05-18 09:38:22 -0600 Kamel

Is this geometric transformation exists in OpenCV ?

503

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no

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2018-05-22 17:23:49 -0600 charles.fox

can't open capture from gstreamer loopback

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2018-05-28 12:00:12 -0600 djerrund

29,830 questions

Use OpenCV in python to detect text blocks and then crop them to save as separate images

OpenCV(3.4.1) Error: ValueError

cv::connectedComponents stuck or seg fault

Problem reading in image correctly [closed]

How can I detect the difference between a neutral face and a facial gesture of the user's choice?

Use OpenCV to create a system that integrates a user uploaded image into a pre-made video.

how to do space allocation using Skeleton algorithm ? [closed]

Import Error [closed]

Adding contrib modules to OpenCV-3.4.1 without CMake [closed]

Process video in OpenCV, without playing it

OpenCV: How to identify a face in scalable way?

OpenCV Detecting Traffic Light green signal

How to compare an image with another image and check whether similar or no? [closed]

Blob coloring not blob detection

How can i read alpha numeric Register no from multiple Identity card from android app using video mode [closed]

how can i upgrade the detection of cv.findContours [closed]

Grouping images by a person appearing on them

WHAT IS THE BEST SOLUTION TO DO TRAFFIC LIGHT DETECTION USING OPENCV? [closed]

Which colour space is best for extracting real world objects?

CV::MAT assignment operator "="

[Question/Java/Help] how to get openCV to run in a jar?

Creating Bounding boxes for contours

I want to calculate the yellow pixels in a YCbCr image (open cv) with python how can I write this code

'cv2.FlannBasedMatcher' object has no attribute 'knnMatches'

Is OpenCV for Python or C++ a good library to use for detecting the blinking rate/frequency of an LED diode lights?

SOLVED How do I correctly install OpenCV 3.4.1?

C++ Using OpenCV, create GIF from images or Video file

Is this geometric transformation exists in OpenCV ?

can't open capture from gstreamer loopback

View specific frame from videofile [extremely slow]

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