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Questions tagged
opencv
204 questions · page 1 of 5
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13
votes
1
answers
Extract single line contours from Canny edges
opencv
computer-vision
contour
edge-detection
feature-extraction
asked 2013-08-06T08:00:07.330
20
votes
6
answers
How can I use imshow to display multiple images in multiple windows?
c++
opencv
asked 2013-08-01T07:22:53.110
47
votes
6
answers
Python OpenCV convert image to byte string?
python
image
opencv
binary
asked 2013-07-31T09:59:36.093
19
votes
2
answers
accessing pixel value of gray scale image in OpenCV
c++
opencv
image-processing
asked 2013-07-29T08:36:22.957
14
votes
2
answers
remove gradient of a image without a comparison image
c++
opencv
image-processing
gradient
asked 2013-07-28T23:32:06.717
8
votes
3
answers
Is conversion from OpenCV code to FPGA code is easier than Matlab code or not?
matlab
opencv
image-processing
fpga
asked 2013-07-25T06:45:06.353
72
votes
13
answers
How to use Opencv with Gradle?
android
opencv
gradle
android-gradle-plugin
asked 2013-07-20T23:05:07.917
17
votes
4
answers
how to display a full screen images with python2.7 and opencv2.4
opencv
python-2.7
asked 2013-07-17T09:28:30.747
32
votes
2
answers
Can I determine the number of channels in cv::Mat Opencv
c++
opencv
mat
asked 2013-06-28T11:39:54.690
9
votes
3
answers
Install OpenCV for Python (multiple python versions)
python
opencv
python-2.7
asked 2013-06-25T00:21:52.880
10
votes
1
answers
Robust Line Extraction from Image
algorithm
opencv
image-processing
computer-vision
hough-transform
asked 2013-06-20T19:10:19.003
12
votes
2
answers
OpenCV image loading for OpenGL Texture
c++
opengl
opencv
textures
asked 2013-05-29T09:10:07.057
8
votes
1
answers
Channel order in OpenCV
c++
opencv
asked 2013-05-20T20:41:27.977
10
votes
6
answers
How to use OpenCV with IntelliJ IDEA 12
java
opencv
ide
intellij-idea
asked 2013-05-07T06:53:30.257
13
votes
2
answers
When open an image using imread with no second argument, what is the color mode? BGR or RGB?
c++
opencv
asked 2013-05-07T02:03:49.530
10
votes
1
answers
OpenCV: measuring distance between two balls in millimeters - how to improve accuracy
opencv
asked 2013-05-04T20:09:32.633
10
votes
6
answers
adding openCV to java buildpath in eclipse
java
windows
eclipse
opencv
asked 2013-05-01T10:21:43.007
11
votes
3
answers
Runtime Opencv HighGui Error- "HIGHGUI ERROR: V4L/V4L2: VIDIOC_S_CROP". Opencv cross compiled. Host=64bit Ubuntu 12.04. Target=ARM-Cortex-A9
opencv
gtk
arm
ubuntu-12.04
static-linking
asked 2013-04-29T20:19:30.293
12
votes
2
answers
How to Handle Occlusion and Fragmentation
opencv
tracking
feature-detection
occlusion
asked 2013-04-26T08:54:35.307
43
votes
3
answers
What is the difference between the fundamental, essential and homography matrices?
opencv
transform
homography
perspectivecamera
projective-geometry
asked 2013-04-18T16:25:02.813
14
votes
4
answers
Undefined symbols for architecture x86_64 error when linking OpenCV in Xcode
xcode
opencv
asked 2013-04-18T08:54:39.217
11
votes
2
answers
Opencv2 cvtColor() does not work
qt
opencv
asked 2013-04-16T09:03:37.040
11
votes
2
answers
How to apply RANSAC on SURF, SIFT and ORB matching results
opencv
feature-extraction
orb
ransac
feature-descriptor
asked 2013-04-14T18:26:34.983
8
votes
4
answers
cv::Scalar not displaying expected color
c++
ios
opencv
colors
drawellipse
asked 2013-04-10T04:08:32.483
11
votes
2
answers
How to determine world coordinates of a camera?
opencv
pose-estimation
asked 2013-03-31T07:55:22.567
30
votes
1
answers
Why is my hand-tuned, SSE-enabled code so slow?
c++
optimization
opencv
sse
asked 2013-03-30T22:41:37.450
11
votes
5
answers
Opencv Error on Ubuntu Webcam (Logitech C270) Capture -> HIGHGUI ERROR: V4L/V4L2: VIDIOC_S_CROP
opencv
webcam
capture
asked 2013-03-20T19:51:12.540
20
votes
1
answers
Python OpenCv cv2 equivalent for CV_FILLED
opencv
python-2.7
asked 2013-03-11T13:38:24.423
45
votes
6
answers
OpenCV Mat element types and their sizes
opencv
asked 2013-03-06T10:49:57.067
10
votes
3
answers
How do I make CvVideoCamera not auto rotate?
ios
objective-c
opencv
asked 2013-02-14T14:21:38.610
16
votes
3
answers
Why is cv::resize so slow?
ios
objective-c
opencv
image-processing
asked 2013-02-13T11:46:46.277
20
votes
2
answers
Fuzzy Template matching?
opencv
computer-vision
asked 2013-02-09T22:03:14.960
23
votes
2
answers
Using opencv to match an image from a group of images for purpose of identification in C++
c++
opencv
computer-vision
object-detection
asked 2013-02-07T04:10:40.917
11
votes
1
answers
Binary Image Orientation
opencv
computer-vision
asked 2013-02-06T02:42:08.357
42
votes
2
answers
Detecting a cross in an image with OpenCV
c++
opencv
video
feature-detection
asked 2013-01-30T19:33:27.413
15
votes
3
answers
OpenCV: How to convert CV_8UC1 mat to CV_8UC3
opencv
asked 2013-01-30T14:24:39.293
10
votes
4
answers
How do I concatenate two matrices in Python OpenCV?
python
opencv
asked 2013-01-29T09:28:09.187
8
votes
1
answers
Separating similar object in an image - opencv python
python
opencv
surf
asked 2013-01-26T05:35:27.370
23
votes
2
answers
Access Violation Exception mystery
c#
opencv
emgucv
asked 2013-01-22T16:09:14.083
8
votes
3
answers
Using Mat::at(i,j) in opencv for a 2-D Mat object
c++
opencv
image-processing
asked 2013-01-13T11:41:14.883
172
votes
5
answers
Convert image from PIL to openCV format
python
image-processing
opencv
python-imaging-library
asked 2013-01-03T07:44:03.577
11
votes
5
answers
How to obtain the scale and rotation angle from LogPolar transform
c++
opencv
asked 2013-01-03T04:11:46.163
11
votes
4
answers
cv2.videocapture.read() does not return a numpy array
python
opencv
v4l2
ftputil
asked 2012-12-21T11:48:50.123
8
votes
2
answers
InitUndistortRectifyMap and Remap
c++
opencv
camera
asked 2012-12-13T14:31:21.493
8
votes
2
answers
Using OpenCV fitEllipse() for circle fitting
opencv
curve-fitting
asked 2012-12-07T09:19:53.787
8
votes
1
answers
reading video from file opencv
c++
c
opencv
asked 2012-12-04T18:14:22.727
10
votes
4
answers
Threshold of blurry image - part 2
image-processing
opencv
threshold
asked 2012-11-30T05:04:29.700
19
votes
5
answers
Pattern Matching - Find reference object in second image [OpenCV?]
c++
opencv
pattern-matching
asked 2012-11-29T10:14:40.663
14
votes
1
answers
How do I create my own haar cascade and apply it?
python
opencv
face-detection
asked 2012-11-26T17:21:52.873
37
votes
4
answers
Compare similarity of images using OpenCV with Python
python
opencv
computer-vision
asked 2012-11-14T13:39:48.197
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