Image registration is the process of transforming different sets of images to one common coordinate system.

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Registering ensembles of images

I'm pretty new to image processing and have run into a bit of a problem with correcting experimentally-caused drifts in my images. In essence, I have a 2D matrix of images, where each image is ...
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120 views

How can I go forward with this image processing task?

0 down vote favorite I am totally new to Image processing. I just started my Master thesis in the area of Computer vision and Machine learning. My background is Informatics. Now, my first task is to ...
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What exactly do we do in non-rigid registration?

I found many readings on Non rigid registration, also saw some videos but didn't find a clear explanation anywhere. What I understood is the following Rigid ...
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Image Registration C#

I'm trying to fuse different images of the same scene which each image have a different focus. I've been told that first I have to perform an image registration to the images. Right now, the result ...
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Detecting blades of a wind turbine

I have many close-range images of a single wind turbine blade (taken from different positions, same angle): I need to separate the blade image from background like this: The problem arises in ...
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110 views

Base line detection of text lines

I came across various works in the literature of document analysis addressing the problem of detecting base lines of multioriented texts. But no amount of search could give me satisfactory answer to ...
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173 views

Image Registration and optical flow

Image registration algorithms can be classified into intensity-based and feature-based algorithms, I want to know When and Why should i choose intensity or feature based algorithm? another question ...
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308 views

How to blend images on a spherical surface / cube map

I already have an algorithm for making panoramic image mosaics by image registration and then blending images in the overlap regions. The following image from Wikipedia illustrates several images ...
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279 views

Normalized cross correlation via FHT - how can I get correlation score?

I'm using the 2D Fast Hartley Transform to do fast correlation of two images in the frequency domain, which is the equivalent of NCC (normalized cross correlation) in the spatial domain. However, ...
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151 views

image correlation without fft

I want to stitch 2 images by crosscorrelation measure, but I don't want to use fft. I tryed this but something seems to be wrong.any suggestions? ...
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609 views

Finding symmetric regions/patterns in image

I have a set of images representing the mean curvature of a human back surface. What I want to do is to "scan" the image for points which have similar, reflected "counterparts" in some other part of ...
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239 views

Software to register a 2D image to a 3D volume

I have been searching for software that can handle the task of registering a 2D image to a 3D volume. The 3D volume is a microCT scan, while the 2D image is taken from a plane passing through the ...
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image registration using fft

I'm trying to register 2 images.First image don't change and second image is changing at each iteration by homography matrix and I'm using minimizer to find maximum of phase correlation, but for some ...
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540 views

Image Registration by Segmentation

Image registration algorithms are usually based on point features such as SIFT (Scale-Invariant Feature Transform). I saw some references to line features, but I was wondering if it would be possible ...
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How do I evaluate the performance of a segmentation algorithm?

I'm currently on a project of liver tumor segmentation. I segmented the liver using region growing, and I have to assess how accurate the result is. I recently learnt that there are certain metrics ...
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500 views

How to compute 2D displacement vector for binary image registration?

My inputs are several binary images like: They have globally the same content but may be unregistered as they are produced from a hand camera. What I would like to compute is the 2D displacement ...
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803 views

Profile Matching in a Point Cloud

A point cloud is generated using uniform random function for (x,y,z). As shown on the following figure, a flat intersecting plane (profile) is being investigated ...
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Point Pattern Recognition

Having two different size of sets of points (2D for simplicity) dispersed within two different size squares the question are that: 1- how to find any occurrence of the the small one through the ...
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401 views

How does google map put together satellite pictures?

Just out of curiousity, does anyone know how does google map put together all those massive quantity of satellite pictures with with high accuracy? What advanced computer science technology has it ...