Welcome to Proofig's advanced tutorial on understanding flip, scale, rotation, and matches in image integrity analysis. This guide will explore what these terms mean and how they appear in the Proofig system.

Flip refers to mirroring an image horizontally or vertically. This can create a duplicate that appears different but is essentially the same image. In the review page, Proofig shows whether an image has been flipped.

Scale involves resizing an image or part of it. Proofig indicates the scale percentage to identify any size discrepancies. A scale of 100% means there is a perfect match in size and scale between two images.

Rotation means turning an image around a central point, which can disguise duplicated elements. Proofig shows the degree of rotation applied to an image.

Matches refer to the number of features that match each other between suspected issues. Generally, if the number of matches is greater than 50, there is a high likelihood that the images have been reused in some way. For a deeper dive into how Proofig ensures the detection of image duplications and reuses, explore our duplication and reuse detection page.

The blue lines connecting suspected images indicate the most significant similar features found by the system.
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You can remove these lines by clicking the 'Hide lines' button.

Here is an example from the system where an image was scaled 147% and rotated 90 degrees with 303 matches detected.

Understanding flip, scale, rotation, and matches is essential for image integrity. Proofig provides clear indicators for each parameter and can detect combinations of manipulations. For more guides, visit our knowledge center. Thank you for using Proofig.