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macro:auto_correlation
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| + | ====== Auto Correlation ====== | ||
| + | |||
| + | **A macro to determine image focal quality image-wide (not ROI-wide)** | ||
| + | |||
| + | <code java> | ||
| + | |||
| + | // A macro to determine image focal quality image-wide (not ROI-wide) | ||
| + | // Based on algorithm F-12 "AutoCorrelation" | ||
| + | // In: Sun et al., 2004. MICROSCOPY RESEARCH AND TECHNIQUE 65, 139–149. | ||
| + | // | ||
| + | // Version: 0.1 | ||
| + | // Date: 14/07/2006 | ||
| + | // Author: Andy Weller | ||
| + | |||
| + | macro "Auto_Correlation" { | ||
| + | W = getWidth(); | ||
| + | H = getHeight(); | ||
| + | b = 0; | ||
| + | c = 0; | ||
| + | autoCorr = 0; // Set to 0 which is out of focus | ||
| + | for (j=0; j<H; j++) { | ||
| + | for (i=0; i<W; i++) { | ||
| + | p = getPixel(i,j); | ||
| + | p1 = getPixel(i+1,j); | ||
| + | p2 = getPixel(i+2,j); | ||
| + | s = p*p1; | ||
| + | t = p*p2; | ||
| + | b += s; | ||
| + | c += t; | ||
| + | } | ||
| + | } | ||
| + | autoCorr = b-c; // Maximum value is best-focused, decreasing as defocus increases | ||
| + | print(autoCorr); // This can also (should) be changed to return(autoCorr) | ||
| + | } | ||
| + | |||
| + | </code> | ||
| + | |||
| + | by Andy Weller — last modified 2006-07-14 20:44 | ||
macro/auto_correlation.txt · Last modified: 2019/04/12 13:13 (external edit)
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