image-comparison

Closed . This question needs to be more focused . It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post . Closed 5 years ago . I have 2 images, say smallerImage and largerImage. Now, I want to check that does smallerImage is part(or subimage) of largerImage or not. I am not getting how to check that. I want to so this whole stuff in iOS. After gogling, i got that using openCV library is best library to use for such a stuff. But i am not getting how to use openCV library to perform my task. In Short, i

I want to have detailed image comparison which are captured using webcam. I tried OpenCV and other Python libraries for image comparison which work good when I do any digital change in image that is changes done on image using PC (using Paint). But when I do any change in image physically using pen or any other object and capture the image with a webcam, then the same library is unable to detected the change done on the image. Factors which leads for such issue: camera (I am using Logitech c310) External noise (I am capturing image under LED tube light) While changing the design it may shift a

Which is the efficient way to compare two images (Bitmaps), to check if they are the same or not? I've tried to document me and I've read that I need to re-size both images to around 16x16px, but I don't get the expected result. I've tried to compare the resized images using .Equals: If img1.Equals(img2) then msgbox("are equals!") End if I've seen AForge image library but I can't found any method inside to compare Images. Is there way to do an efficient Image comparison using .NET classes or 3rd party libs without hardcode a pixel-per-pixel image comparer? If not, any example of a function to

I am trying to make an automator tool and am experimenting with a type of recording which takes screen shots and records user inputs. The idea would be for user to take a snapshot and and highlight a square on the snapshot of the "submit" button. During playback, the program would take a sceenshot of the open window, and find the coordinates of the button by searching for the snapshot. So I need an algorithm to search an image for an exact (or very close) image of the button. The algorithms I've found so far compare image likeness but cannot find it in a subimage, and algorithms for object

I am trying to develop a program which would take the snapshot of webpage and will then compare it to an old one and highlight the changes if any. I am using Selenium- WebDriver for taking snapshots. For image processing and compare, after a bit googling I found jMagick , a Java interface for ImageMagick , which I think would be best fit for my requirement. But due to lack of proper documentation, I am not able to find anything relevant. If anyone could help me out with any code sample for image comparision that would be really helpful. Again, the problem is to compare two images and highlight

I am working on a project in which the two images will be checked for similarity like 'Google Image Search by image'. I searched through Google and also on various sites including stackoverflow and learnt about various techniques like histogram, sift, fourier transform, pixel grabbing, etc. The things are too complex for me to understand being a beginner in this field. My questions are: From where can i get started?? Is there any book available or a site which give tutorials for learning about how to actually use these techniques? Are there new techniques which can be implemented for this