Re: [Jprogramming] find crop position in image

2019-04-30 Thread Ben Gorte
With getting the thing to compile I'm afraid I cannot help. I once downloaded a linux binary dated July 8, 2005. It reads a .pgm from stdin, writes an ascii keypoint file to stdout, and has very standard dependencies. If all else fails I can send it to you :-) grtz, B On Wed, May 1, 2019 at 3

Re: [Jprogramming] find crop position in image

2019-04-30 Thread Raul Miller
Thanks, that looks promising. Now to see if I can get the thing to compile, with all of its dependencies... Thanks again, -- Raul On Mon, Apr 29, 2019 at 10:10 PM Ben Gorte wrote: > > Hi Raul, > > I would use Lowe's SIFT (Scale Invariant Feature Transform) for that, see > Wikipedia. I just tr

Re: [Jprogramming] find crop position in image

2019-04-29 Thread Ben Gorte
Hi Raul, I would use Lowe's SIFT (Scale Invariant Feature Transform) for that, see Wikipedia. I just tried it on an "arbitrary" image: selected a part of it and scaled that down by 0.4321 using bilinear interpolation. Then used SIFT to extract key points from the original and the scaled-down selec

[Jprogramming] find crop position in image

2019-04-29 Thread Raul Miller
I've got a situation where I've got some large images (maybe on the order of 4000 pixels square - though many are not square) which have had crops made from them which are quite a bit smaller. 1200 pixels wide and 600 high is one fairly common example. These crops were taken from the original, and