I have two images of same character (e.g. A) but of different sizes. My question is "what is the feature of both image having same value that means one property of first image is same for the second image. Please reply.
2 views (last 30 days)
Show older comments
I have two images of same character (e.g. A) but of different sizes. My question is "what is the feature of both image having same value that means one property of first image is same for the second image. Please reply. I try using different properties of regionprops (eccentricity, orientation, extent) and also bware function.
0 Comments
Accepted Answer
Image Analyst
on 3 Jun 2014
Measurements that are "scale invariant" are those that don't have units of pixels or pixels squared or depend on the actual numbers of pixels being measured, like orientation, Euler number, Solidity, and ratios like circularity = perimeter^2/(4*pi*area).
Measurements that depend on scale are those that have units of pixels, like MajorAxisLength, MinorAxisLength, area, perimeter, EquivDiameter, {PixelList, PixelIdxList, PixelValues, Centroid, etc.
2 Comments
Image Analyst
on 4 Jun 2014
If an image is shrunk, information is lost. If an image is magnified, information is not necessarily added. Changing the size will not necessarily lose so much information that recognition can no longer be done - it may still be possible to do the same algorithm successfully.
More Answers (0)
See Also
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!