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segmentation license plate

I have this image as shown below. The 'k' is somehow not detected because it is connected to the background. Is there any way to detect the 'k' ![image description](/upfiles/14386352771012959.png)

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Isolating a change in color in OpenCV.

So I've been attempting some image manipulation and I've come across a problem which seems simple but I can't seem to wrap my head about. How do you isolate a change in color? Say you have a grey...

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YML read() not working for DescriptorExtractor / Android

I'm trying to set parameters for the ORB descriptor extractor. It worked fine with 2.4 but throws an XML parsing exception with 3.0. Even the test code in ORBDescriptorExtractorTest.java seems to fail:...

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how to detect the side view of a a face using OpenCV

i know that it is easily possible to detect the front face using the sample app of opencv but according to my app requirement i also need to detect the sideview of a face

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Android development with OpenCV tutorial not working

Hi There! I am just following the OpenCV Android tutorial on the official webpage of OpenCV: http://docs.opencv.org/2.4.3/doc/tutorials/introduction/android_binary_package/dev_with_OCV_on_Android.html...

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Moment Value & Area validation manually not the same

Hello, I had tried to check using and a very simple image ( inside the image there is a square black and white). The dimension of the image is 100X100 pixel. The square point coordinate in the image...

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Problems linking opencv with qt when cross-compiling

Hi everybody ! I wrote a c++ code with qt on Linux, and I am trying to cross-compile for Windows following this tutorial:...

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Or after it really is a great smeary

Or after it really is a great smeary Ill hers what an urns absolute limits now dates a little bit cold is arm it’s made by women in mississippiinches this ultra strong accent like that word 300-101...

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Opencv 2.4.9 compatibility with windows versions(CE, 98, Xp to windows 10)

I am looking for compatibility list for Opencv (version 2.4.9) with different versions of windows OS(CE, 98, Xp to windows 10). Please share details/links where i can find these details.

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Handling motion-blur problem in ArUco augmented reality toolkit

I'm trying to handle motion-blur problem in ArUco augmented reality toolkit. The main idea of ArUco is to track a board of multiple markers in order to calculate the camera pose relative to the board....

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Accessing Y information from Raspicam (Python)

Hi, I am having trouble loading a YUV array in OpenCV. I am trying it on a raspberry pi and I used the code that I saw in the answer to this...

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unable to determine angle because of points from line

I have an image from which i have created some lines. I have saved starting and end points of line. Lines are basically long side of rectangle that is bounding a white blob in image. Rectangles are...

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Inverse Pattern

Hello All, I am working on Inverse Pattern. I have one chessboard image. I am projecting this on floor which is around 45 degree, so I can see the deformed chessboard on floor. If I would have...

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OpenCv 3 Beta -ICF classifier performance is very bad.

Hi, I am working with OpenCV_Contrib module and using xobjdetect module for pedestrian detection. I have trained ICF model using following params: icfParams.alpha= 0.02; icfParams.bg_per_image= 5;...

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Access numpy array in openCV

Using the documentation [here](http://picamera.readthedocs.org/en/release-1.10/recipes1.html#capturing-to-an-opencv-object), in section 4.4 the code is:> import time import picamera import>...

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How can I resize an image from the center?\

Hello! I have a contour, and I want to resize this contour and then draw the resized contour in same image, In another words, I want to create an external contour to the existent one. To this I need to...

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Background Subtraction example

Hi, I am trying to follow this tutorial : http://docs.opencv.org/master/d1/dc5/tutorial_background_subtraction.html When I compile the code I get this error : Unhandled exception at 0x07EFC900...

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iOS Issues

Hello everyone, I recently went through the iOS tutorial and tried to get it working on an iOS 8.4 device. Aside from some property identifier changes, it seemed that the tutorial lined up pretty well...

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OpenCV Error: Assertion failed (abs_max < threshold) in stereoCalibrate

I am trying to run fisheye::stereoCalibrate but I run into an exception for CV_Assert(abs_max < threshold); // bad stereo pair This is an error I get when trying to run multiple images, however if...

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FlannBasedMatcher does not always return match

Hello, I am trying to use a Bag of Words approach using ORB with opencv. I have implemented it with SURF but I want an open source implementation (patent free). Because ORB uses int descriptors and...

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