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Questions tagged [image-comparison]

Methods, algorithms and techniques for the programmatic comparison of image data.

Methods, algorithms and techniques by which images can be programmatically compared, either to one another or to a database of extracted image features.

Meaningful image comparison will typically involve the extraction of some of features from the images in question, as metadata. Many techniques for feature extraction (and subsequent feature selection) come from the content-based image retrieval field.

Typical image-comparison schemes necessitate some manner of image processing as well.

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Simple quick robust image comparison

I have an image find- and "blur-compare"-task. I could not figure out which methods I should use. The setup is this: A, say, 100x100 box either is mostly filled by an object or not. To the human eye this object is always almost the same, but might…
Konsta
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Image comparison and Angle Estimation

I have a target object and a lot of other objects in an image. Target object is pre-defined with a known shape in advance as shown in figure. My task is to detect all the target object present in the image and find the angle at which the detected…
rohit thakur
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Image-comparison algorithms

So Im looking at an image and trying to select one from a set of other images that is the most similar (least different). Currently I simply look at the average difference between the RGB parts of each pixel, but this has a tendency of picking grey…
taracus
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Image Comparison in an android

I have requirement like below in an android, Read image from camera or gallery of android phone. Compare this image with an image stored in a database (any valid format). Show the percentage of match between the images. Tell me possible ways to…
Sharan Ballundagi
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Get most similar image

I have one Bitmap A and one array of Bitmap, in the array there is a Bitmap that looks the same as Bitmap A. I'm using the code below but it sometimes doesnt work, it iterates the entire array without finding it, it seems there are some minor…
Carlos Siestrup
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Comparing images using OpenCv or something more useful

I need to compare two images in a project, The images would be two fruits of the same kind -let's say two different images of two different apples- To be more clear, the database will have images of the stages which an apple takes from the day it…
Rawan.S
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Comparing Images with variation in transparency level and comparing texts in it

I have multiple labels produced at multiple folders by diffrent softwares. the sizes of labels are same but their transparency labels varies.Ideally they are same, but when i compare using my internal application, it throws me error saying they…
Sudhir pradhan
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How to compare pixel colors

I have a background image and a new image that I wish to compare pixel by pixel. I will call these I1 and I2. Suppose the color at x,y in I1 is (r1,g1,b1) and I2 is (r2,g2,b2). Now I find this empirically of the light settings I had in my room, that…
Aditya
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How do you compare two images in python to return a numerical difference and time elapsed?

numerical difference is expected as positive or negative with decimal places compare the visual appearance of each image, not their binary contents for example: file1.png & file2.gif diff 0.23 time elapsed 0.843 I have tried from PIL…
Ridhwaan Shakeel
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How to use PIL/Pillow in PyScriptor (Python) to import Image

I have: Pillow-3.4.0-cp34-cp34--win32.whl (md5) (which I found here) Python-3.4.0.amd64 Pyscripter-v2.6.0-setup I am attempting to create a program that can compare two images and have come across a problem to do with PIL. As I understand it, you…
Sebastian Sheath
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Compare image against an array of images

I have an image located in C:\ImageOne.png And I have lets say 20 images in the directory C:\Images How can I compare ImageOne.png against all those images? Example: Imagine i got one reCaptcha image saved as C:\ImageOne.png And in a folder…
Merceyz
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