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Questions tagged [template-matching]

Template matching is the process of finding a smaller known template image in another larger image.

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Different template matching result in OpenCV and Matlab

I do template matching in MATLAB and C++ using OpenCV with two sample image and I get different results. My sample images are: crop temp when I use: Mat crop = imread("crop.jpg",0), temp = imread("temp.jpg",0); int resultWidth =…
s.a.t
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C# native Image template match

I'm having a little performance trouble here. My Professor of image processing asked me to make an template match without any library, so I did it in c# ... it's doing the work perfectly, but very very, veery slow to find an template 80x80 in an…
Nicollas Braga
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Is it possible to use OpenCV TemplateMatching with a patch images dimensions or background color only?

I am using OpenCV on iOS to detect a rectangular label to assist users in snapping a photo of that label. I have an overlay that presents once the matches threshold is met. My question is, does that patch image used have to be exact? The labels I…
SprayKid982
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TemplateMatching performance in different light conditions

I was working on hand detection,I tried haar cascade but it doesnt give proper result on most of the images but templateMatching is giving better result.I am just curious if template matching will work in different condition of light and which one…
Rahul galgali
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how do we store Segmented Image template in the Matlab for matching?

I am beginner in the MATLAB. I am working on the iris segmentation and recognition for my research work. I have used the Libor Masek (http://www.csse.uwa.edu.au/~pk/studentprojects/libor/sourcecode.html - Source Code available here). Whole Process…
Purvik Rana
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OpenCV match capture to location in larger image

Which of the openCV methods would be suitable for finding the position of a captured image on a larger image, which the capture will be within. My intention is to match a captured image of the floor with a full image of the entire floor to find the…
Mark Corrigan
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Emgu Cv matchtemplate for millions of images in c#?

Image result = source.MatchTemplate(template, Emgu.CV.CvEnum.TM_TYPE.CV_TM_CCOEFF_NORMED) I have millions of pictures as source . Its taking lot of time. Is there any solutions to make it quick?
umair
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Get absolute difference from a picture and template. [Template matching]

I have the two methods which should write pixel values of the absolute difference of a template and the same size patch from the original picture into the pixel where both patch and template coordinates are 0,0. Here are my 2 methods. private void…
b-m-f
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Object matching using Feature Matching in Open CV

I am new in OpenCV. I have used template matching to match a template image in a big image. But using feature matching sometimes it is not matching. Size of my template is 40 X 40. Please help me in this. One thing which I want to know that if…
Anurag
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OpenCV Template Matching for Round Images in Java

I dont always have square/rectangle images, sometimes I should match round images as well. Below are 2 images for example. Ball is the template image and the second is Source where the template should be searched. I can make the background of…
Anarkie
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Cross-Correlation in Frequency and Spatial domain - Template Matching

So when I try to find a template B in a big image A, I can do it by finding the maximum of cross-correlation, like this in spatial domain: % Finding maximum of correlation: phi = normxcorr2(B,A); [ymax, xmax] = find(phi ==…
Vidak
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How do I compare a picture to a shape template?

I am creating an app that compares the shape of an object to a bunch of template images. For Example: The user takes a picture of a bottle and the app will find the shape and compare it to find the type of bottle it is based on template images. I…
Davis Carlson
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template matching? object recoginition and feature matching or what is the solution?

Problem: I have a photo of an object (a manufactured part like the attached photo below), using my Andoird phone camera I want to verify if the object in camera preview matches to the template or not. (in other words, is it the same part as the…
Asha
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Introducing template matching approaches except NCC and SSD

I am looking for an algorithm for template matching which I can implemented in matlab or python. I have already used normalized cross correlation and sum of sqaure differences. But These are not robust for my work. Does anyone have any suggestion…
user3397178
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image processing using template matching approach

i am working on a project related to template matching image processing , i have done the matching algorithm but the problem i am facing that , template matcher always yeilds the best co-relation matched in source image of template image but i want…
user3703949
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