added discrete fourier transform

svn path=/trunk/externals/pdp_opencv/; revision=11783

1 files changed, 159 insertions, 0 deletions

diff --git a/pdp_opencv_dft-help.pd b/pdp_opencv_dft-help.pd
new file mode 100755
index 0000000..a9ce5d8
--- /dev/null
+++ b/pdp_opencv_dft-help.pd
@@ -0,0 +1,159 @@
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+#X text -145 -113 Camera input;
+#X text -188 -181 written by yves degoyon ( ydegoyon@gmail.com );
+#X text 376 -143 input 1;
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+#X msg 479 -70 load \$1 0 0;
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+#X text 507 -124 loading a pattern image;
+#X text 455 -143 input 2 ( pattern );
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+#X obj 462 179 pdp_opencv_dft;
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+#X text 425 435 <- average value of pixels;
+#X text 445 461 the input image is close to the pattern;
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+#X obj 300 301 pdp_binary ----------------;
+#X obj 123 301 pdp_binary --------------;
+#X obj 264 105 loadbang;
+#X text -187 -211 pdp_opencv_dft : discrete fourier transform;
+#X text -187 -197 this can be used for pattern matching;
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+#X obj 460 -2 pdp_convert image/YCrCb/*;
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+#X text 445 448 when it's close to its minimum;
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+#X obj 330 -54 loadbang;
+#X text 259 -121 playing a video file;
+#X text 506 -112 ( try chini.jpg );
+#X text 281 -108 ( try chini.mov );
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+#X msg 284 252 60;
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+#X text 369 254 Threshold the fft to eliminate noise;
+#X text 369 266 60 is a godd value to eliminate noise;
+#X text 369 277 and keep meaningful points;
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