* rewinddir * * Return to the beginning of the directory "stream". We simply call findclose * and then reset things like an opendir. */

Sample the image at (x, y) using bilinear interpolation. (x, y) must lie inside [0, width-1] x [0, height-1]; caller checks bounds.

Round target up to the nearest power of 2, then choose whichever of {that, that/2} is closer to target. Used to size FFT frames given a target duratio

Radon-transform-style line integrals: for each of N angles uniformly spaced in [0, pi), walk along a line through the image center at that angle, samp

Run an individual test case.

Hash an image already held in memory. Avoids the temp-file round-trip that mhImageHash(String) requires. The byte[] is the row-major interleaved pixel

* closedir * * Frees up resources allocated by opendir. */

* opendir * * Returns a pointer to a DIR structure appropriately filled in to begin * searching a directory. */

* seekdir * * Seek to an entry previously returned by telldir. We rewind the directory * and call readdir repeatedly until either dd_stat is the po

* telldir * * Returns the "position" in the "directory stream" which can be used with * seekdir to go back to an old entry. We simply return the va

auxiliary function for sorting list of hashes

auxiliary function for sorting list of hashes

getpagesize for windows */

TEST for image DCT hash function * The program reads all images from the two directories given on the command *line. The program expects the same n