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  2. Spot the difference - Wikipedia

    en.wikipedia.org/wiki/Spot_the_difference

    Spot the difference games are found in various media including activity books for children, newspapers, and video games.They are a type of puzzle where players must find a set number of differences between two otherwise similar images, whether they are illustrations or photographs that have been altered with photo manipulation.

  3. Can You Spot the Difference in These 20 Pictures? - AOL

    www.aol.com/spot-difference-20-pictures...

    Get your eyes ready—these are pretty tricky. The post Can You Spot the Difference in These 20 Pictures? appeared first on Reader's Digest.

  4. Visual comparison - Wikipedia

    en.wikipedia.org/wiki/Visual_comparison

    A visual diff or vdiff finds differences between two files by eyeball search.The term optical diff has also been reported, and is sometimes more specifically used for the act of superimposing two nearly identical printouts on one another and holding them up to a light to spot differences.

  5. Comparison - Wikipedia

    en.wikipedia.org/wiki/Comparison

    Comparison or comparing is the act of evaluating two or more things by determining the relevant, comparable characteristics of each thing, and then determining which characteristics of each are similar to the other, which are different, and to what degree. Where characteristics are different, the differences may then be evaluated to determine ...

  6. Image subtraction - Wikipedia

    en.wikipedia.org/wiki/Image_subtraction

    For this technique to work, the two images must first be spatially aligned to match features between them, and their photometric values and point spread functions must be made compatible, either by careful calibration, or by post-processing (using color mapping). The complexity of the pre-processing needed before differencing varies with the ...

  7. Sum of absolute differences - Wikipedia

    en.wikipedia.org/wiki/Sum_of_absolute_differences

    These differences are summed to create a simple metric of block similarity, the L 1 norm of the difference image or Manhattan distance between two image blocks. The sum of absolute differences may be used for a variety of purposes, such as object recognition, the generation of disparity maps for stereo images, and motion estimation for video ...

  8. Structural similarity index measure - Wikipedia

    en.wikipedia.org/wiki/Structural_similarity...

    The structural similarity index measure (SSIM) is a method for predicting the perceived quality of digital television and cinematic pictures, as well as other kinds of digital images and videos. It is also used for measuring the similarity between two images.

  9. Change blindness - Wikipedia

    en.wikipedia.org/wiki/Change_blindness

    In the spotlight effect, this poor performance is a result of the overestimation of others' ability to notice us whereas in change blindness it is the overestimation of others' ability to notice the sweater change. In other words, it is the distinction between noticing differences on a person and noticing differences between any images.