Questions - OpenCV Q&A Forum

1k

views

no

answers

no

votes

2019-10-08 03:43:52 -0600 khaalidi

Detect if a set pixels crossing the boundary of the bounding box

712

views

no

answers

no

votes

2019-11-19 11:13:41 -0600 zakaziko

Extract object and save it as an image.png using c++

c++
opencv

342

views

no

answers

no

votes

2019-08-20 07:37:10 -0600 LBerger

Not able to identify the images correctly

360

views

no

answers

no

votes

2019-12-03 04:47:46 -0600 supra56

Results of opencv dnn looks weird when using the tensorflow model(faster rcnn) to detect the object

c++dnnopencv

320

views

1

answer

no

votes

2019-04-04 03:33:52 -0600 dkurt

DNN with tiny yolo 3 [closed]

1k

views

2

answers

-1

votes

2020-02-01 21:10:44 -0600 supra56

How to get the number of centroids in a rectangle?[SOLVED]

633

views

no

answers

no

votes

2017-11-15 02:10:55 -0600 vbc

How to improve object detection using Haar Cascade Opencv C++?

Haar
cascade

442

views

no

answers

-1

votes

2020-10-21 04:21:07 -0600 yujy9014

OpenCV Python program for Vehicle detection in a Video frame

mysqlopenv#python

456

views

1

answer

3

votes

2018-04-30 06:42:46 -0600 Trudesagen

Parking distance calculation for a car

346

views

no

answers

no

votes

2015-01-28 09:35:32 -0600 BillyBag2

Detect one of N objects

361

views

1

answer

no

votes

2020-09-01 09:38:52 -0600 berak

Haar Cascade or ...? OpenCV detection

1k

views

1

answer

no

votes

2017-09-02 09:20:44 -0600 sturkmen

Best way to detect wheels passing on video

627

views

no

answers

no

votes

2017-02-12 09:20:38 -0600 xKazutox

How to calculate the speed of a moving object from a classifier

675

views

no

answers

no

votes

2019-11-26 13:59:12 -0600 Rishan123

cv2.error: OpenCV(4.1.0) /home/pi/opencv/opencv-4.1.0/modules/features2d/src/bagofwords.cpp:55: error: (-215:Assertion failed) !_descriptors.empty() in function 'add'

432

views

1

answer

no

votes

2015-10-16 04:48:16 -0600 StevenPuttemans

Best solution for car approaching to the gate and anpr lib

499

views

no

answers

no

votes

2018-01-09 18:10:54 -0600 minh

A way to work with HSL?

ask

378

views

no

answers

no

votes

2014-04-28 00:21:39 -0600 Shiloh

How to increase detection chance and repair the rectangle?

python

1k

views

3

answers

no

votes

2014-02-22 08:58:13 -0600 FLY

Need Suggestion for Detecting

158

views

no

answers

no

votes

2019-05-15 06:30:20 -0600 Shay Weissman

TinyYolo Tiny gives long process time once in a while

dnn
Yolov3

1k

views

1

answer

no

votes

2013-02-28 02:24:30 -0600 StevenPuttemans

Random Vehicle Detection

1k

views

2

answers

no

votes

2020-03-29 05:24:53 -0600 ComputerVisionary

Passengers counting in car using opencv

320

views

no

answers

no

votes

2019-02-11 21:29:19 -0600 chandini

Multiple object class detection by extracting image features (like SIFT or HOG)

1k

views

1

answer

no

votes

2014-04-11 08:16:28 -0600 Shiloh

Error in train cascade, is it caused by my .vec file?

#opencv#window

628

views

no

answers

no

votes

2015-06-27 08:23:07 -0600 Alfonsus Dhani

Motorcycle detection

809

views

no

answers

no

votes

2020-04-15 07:18:39 -0600 supra56

using solvePnP and triangulatePoints to get the object 3D points at 10 meter for obstacle coordinate estimation

694

views

1

answer

2

votes

2012-09-10 13:00:19 -0600 yes123

Video timing system for racing cars... is this possible?

1k

views

1

answer

no

votes

2014-11-12 06:45:08 -0600 thdrksdfthmn

how to extract car features from video of moving car?

2k

views

1

answer

no

votes

2020-03-29 05:21:45 -0600 ComputerVisionary

How to tracking multiple vehicle (e.g car and motorcycle) using haar cascade classifier?

cv#opencv#python

3k

views

1

answer

3

votes

2015-03-03 02:53:19 -0600 StevenPuttemans

Visualizing learned features from Haar cascade classifier

2k

views

2

answers

-1

votes

2015-04-24 05:04:30 -0600 la lluvia

224 questions

Detect if a set pixels crossing the boundary of the bounding box

Extract object and save it as an image.png using c++

Not able to identify the images correctly

Results of opencv dnn looks weird when using the tensorflow model(faster rcnn) to detect the object

DNN with tiny yolo 3 [closed]

How to get the number of centroids in a rectangle?[SOLVED]

How to improve object detection using Haar Cascade Opencv C++?

OpenCV Python program for Vehicle detection in a Video frame

Parking distance calculation for a car

Detect one of N objects

Haar Cascade or ...? OpenCV detection

Best way to detect wheels passing on video

How to calculate the speed of a moving object from a classifier

cv2.error: OpenCV(4.1.0) /home/pi/opencv/opencv-4.1.0/modules/features2d/src/bagofwords.cpp:55: error: (-215:Assertion failed) !_descriptors.empty() in function 'add'

Best solution for car approaching to the gate and anpr lib

A way to work with HSL?

How to increase detection chance and repair the rectangle?

Need Suggestion for Detecting

TinyYolo Tiny gives long process time once in a while

Random Vehicle Detection

Passengers counting in car using opencv

Multiple object class detection by extracting image features (like SIFT or HOG)

Error in train cascade, is it caused by my .vec file?

Motorcycle detection

using solvePnP and triangulatePoints to get the object 3D points at 10 meter for obstacle coordinate estimation

Video timing system for racing cars... is this possible?

how to extract car features from video of moving car?

How to tracking multiple vehicle (e.g car and motorcycle) using haar cascade classifier?

Visualizing learned features from Haar cascade classifier

get images from opencv_createsamples, annotations, png files

Links

Contributors

Tags