diff options
Diffstat (limited to 'src/peaks.c')
| -rw-r--r-- | src/peaks.c | 46 |
1 files changed, 43 insertions, 3 deletions
diff --git a/src/peaks.c b/src/peaks.c index c99cc535..7466c880 100644 --- a/src/peaks.c +++ b/src/peaks.c @@ -31,6 +31,7 @@ #define PEAK_WINDOW_SIZE (10) #define MAX_PEAKS (2048) +#define INTEGRATION_RADIUS (10) static int in_streak(int x, int y) { @@ -268,6 +269,39 @@ static void cull_peaks(struct image *image) } +static void integrate_peak(struct image *image, int xp, int yp, + float *xc, float *yc, float *intensity) +{ + signed int x, y; + const int lim = INTEGRATION_RADIUS * INTEGRATION_RADIUS; + int total = 0; + int xct = 0; + int yct = 0; + + for ( x=-INTEGRATION_RADIUS; x<+INTEGRATION_RADIUS; x++ ) { + for ( y=-INTEGRATION_RADIUS; y<+INTEGRATION_RADIUS; y++ ) { + + int val; + + /* Circular mask */ + if ( x*x + y*y > lim ) continue; + + val = image->data[(x+xp)+image->width*(y+yp)]; + + total += val; + + xct += val*(xp+x); + yct += val*(yp+y); + + } + } + + *xc = (float)xct / total; + *yc = (float)yct / total; + *intensity = total; +} + + void search_peaks(struct image *image) { int x, y, width, height; @@ -366,9 +400,15 @@ void search_peaks(struct image *image) if ( d > 15.0 ) { - image_add_feature(image->features, - mask_x, mask_y, image, - data[mask_x+width*mask_y]); + float x = 0.0; + float y = 0.0; + float intensity = 0.0; + + integrate_peak(image, mask_x, mask_y, + &x, &y, &intensity); + + image_add_feature(image->features, x, y, + image, intensity); } |