Questions - OpenCV Q&A Forum

1k

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2

answers

-1

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2017-11-30 21:15:31 -0600 supra56

why I can’t use sift/surf

opencvpython

1k

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no

answers

-1

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2017-11-27 23:26:45 -0600 ShayanFiroozi

Pornography/nudity Cascade training best size and parameters [closed]

4k

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no

answers

-1

votes

2017-12-01 03:48:30 -0600 PoeteMaudit

findContours() does not find accurately contours (Python) [closed]

3k

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2

answers

no

votes

2017-11-29 03:50:43 -0600 supra56

How to fix this error: grayscaled = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY) cv2.error: /io/opencv/modules/imgproc/src/color.cpp:10638: error: (-215) scn == 3 || scn == 4 in function cvtColor?

opencvpython

126

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no

answers

-1

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2017-11-28 22:41:27 -0600 Rthi

how to reduce scanning time of QR code using multi-core in opencv c++

c++
opencv

397

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no

answers

-1

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2017-11-29 06:00:35 -0600 arigarcia

Java Multi threads with OpenCV 3.3.1

1k

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1

answer

no

votes

2017-11-30 05:16:11 -0600 michlvl

Errors during compiling tutorial (feature_homography)

240

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1

answer

-1

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2017-11-30 11:23:38 -0600 sjhalayka

Why my array had different data?

1k

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1

answer

-1

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2017-12-02 21:06:47 -0600 supra56

AttributeError: 'module' object has no attribute 'face' Pycharm OS

FaceRecognizer

142

views

1

answer

no

votes

2017-12-03 06:25:50 -0600 berak

threshold cannot work normally

threshold

3k

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1

answer

-1

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2017-12-04 12:28:49 -0600 jpistorino

Moving Window With Mouse Using Imshow

221

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1

answer

no

votes

2017-12-04 23:06:36 -0600 striving

face recognition by Euclidean space distance seeking for help

12k

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1

answer

-1

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2017-12-08 04:35:15 -0600 StevenPuttemans

Human Detection and tracking opencv c++

196

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no

answers

-1

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2017-12-06 00:22:46 -0600 Elmi

cvCalibrateCamera2 does not fully compensate spatial distortion

1k

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1

answer

-1

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2017-12-07 13:58:40 -0600 berak

Mat Template Pointer is NULL

Mat
reserve

203

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no

answers

-1

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2017-12-10 01:00:24 -0600 Tianran

Simulated 3rd Camera with stereovision

1k

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no

answers

no

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2017-12-11 11:53:16 -0600 berak

Help me with inserting an audio file in this python code for face & eye detection?

507

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no

answers

-1

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2017-12-14 03:37:29 -0600 Tinto

Detecting shapes using open Cv in Android

down-voted

404

views

1

answer

-1

votes

2020-01-28 02:18:13 -0600 h22

Problem with push_back

c++
opencv

308

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no

answers

-1

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2017-12-24 12:18:36 -0600 Asad Malik

is it possible to recognize face in android through OpenCv?? if possible then how?? [closed]

261

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no

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-1

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2017-12-26 03:06:40 -0600 kasthe

Why is calibration result value of stereo camera zoom?

432

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no

answers

-1

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2017-12-27 05:53:31 -0600 maclaw

Can someone help me with detection in opencv? [closed]

down-voted

449

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no

answers

no

votes

2017-12-27 11:00:07 -0600 kimi05

Count pixel for black and white using OpenCV for Unity [closed]

off-topic

414

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1

answer

-1

votes

2017-12-30 10:24:32 -0600 Tetragramm

I want to track a flying ball and make sure it passed through a vertical ring 9mtr high and placed at a distance of 3mtr from camera. Please help in python. [closed]

object-tracking

1k

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no

answers

-1

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2018-01-01 13:41:21 -0600 BhanuPrasad

Image matching using OpenCV ORB + Android

549

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no

answers

-1

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2018-01-02 07:08:58 -0600 hsmlee

How to find the model files for "facemark->load models" of OpenCV_Contrib?

opencv_contrib

163

views

no

answers

-1

votes

2018-01-02 10:05:53 -0600 mustinba

Square detectio and crop and save

omr

1k

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no

answers

-1

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2018-01-04 03:26:47 -0600 muhrahmatullah

How to match object in image with SURF on Android

181

views

1

answer

-1

votes

2018-01-05 04:20:49 -0600 berak

opencv 2.4 upgrade opencv 3.4 Methods didn't [closed]

opencv
3.4.0

2k

views

no

answers

-1

votes

2018-01-04 23:34:32 -0600 Samir Mishra

29,830 questions

why I can’t use sift/surf

Pornography/nudity Cascade training best size and parameters [closed]

findContours() does not find accurately contours (Python) [closed]

How to fix this error: grayscaled = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY) cv2.error: /io/opencv/modules/imgproc/src/color.cpp:10638: error: (-215) scn == 3 || scn == 4 in function cvtColor?

how to reduce scanning time of QR code using multi-core in opencv c++

Java Multi threads with OpenCV 3.3.1

Errors during compiling tutorial (feature_homography)

Why my array had different data?

AttributeError: 'module' object has no attribute 'face' Pycharm OS

threshold cannot work normally

Moving Window With Mouse Using Imshow

face recognition by Euclidean space distance seeking for help

Human Detection and tracking opencv c++

cvCalibrateCamera2 does not fully compensate spatial distortion

Mat Template Pointer is NULL

Simulated 3rd Camera with stereovision

Help me with inserting an audio file in this python code for face & eye detection?

Detecting shapes using open Cv in Android

Problem with push_back

is it possible to recognize face in android through OpenCv?? if possible then how?? [closed]

Why is calibration result value of stereo camera zoom?

Can someone help me with detection in opencv? [closed]

Count pixel for black and white using OpenCV for Unity [closed]

I want to track a flying ball and make sure it passed through a vertical ring 9mtr high and placed at a distance of 3mtr from camera. Please help in python. [closed]

Image matching using OpenCV ORB + Android

How to find the model files for "facemark->load models" of OpenCV_Contrib?

Square detectio and crop and save

How to match object in image with SURF on Android

opencv 2.4 upgrade opencv 3.4 Methods didn't [closed]

Face detection in android studio using opencv

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