piv/config.h

/* When scale == 2, image is reduced by 2 */
/* When scale == 1, full resolution image is used */
unsigned scale = 2;
/* Variable used to determine how many images are being processed
 * Command : ls 'input_str' | wc -l'
 * can tell you have files match the expression passed to the reader plugin */
unsigned number_of_images = 1;
/* When dump_ring_to_image == 1, data is written to an image
 * When dump_ring_to_image == 0, data is written in a text file as
 * coordinates with the first line being the number of rings and all
 * subsequent lines the "x y r" coordinates. */
unsigned dump_ring_to_image = 0;

char *input_str = "data/Image0.tif";
g_object_set (G_OBJECT (global_reader), "path", input_str, NULL);
g_object_set (G_OBJECT (piv.writer), "filename", "res%i.tif", NULL);
g_object_set (G_OBJECT (piv.ringwriter), "filename", "results", NULL);
/* Define matrix_size to determines the number of surrounding pixels to
 * be compared with, ideally make this number uneven
 * Being twice the size of the actual ring thickness tends to be good */
g_object_set (G_OBJECT (piv.denoise), "matrix_size", 26 / scale, NULL);
/* Boolean to say whether or not to romve high intensity pixels */
g_object_set (G_OBJECT (piv.contrast), "remove_high", 0, NULL);
/* Giving ring radius, when using reduce plugin divide them by 2 */
unsigned ring_start = 10 / scale;
unsigned ring_end = 130 / scale;
unsigned ring_step = 2 / scale;
g_object_set (G_OBJECT (piv.ring_pattern), "ring_start", ring_start, NULL);
g_object_set (G_OBJECT (piv.ring_pattern), "ring_end", ring_end, NULL);
g_object_set (G_OBJECT (piv.ring_pattern), "ring_step", ring_step, NULL);
/* Should be the same dimension as input image */
/* When using reduce plugin divide it by 2 */
g_object_set (G_OBJECT (piv.ring_pattern), "width", 1080 / scale, NULL);
g_object_set (G_OBJECT (piv.ring_pattern), "height", 1280 / scale, NULL);
/* Giving thickness of rpiv.ing
 * NOTE if rings raddi apiv.nd thickness are too big, you will get errors from
 * the gpu * saying  CL_piv.INVALID_WORK_GROUP_SIZE */
g_object_set (G_OBJECT (piv.ring_pattern), "ring_thickness", 6 / scale, NULL);

/* Set the maximum number of rings that should detected per ring pattern, if
 * the number of found rings is greater than max_count, then the output is
 * ignored */
g_object_set (G_OBJECT (piv.concatenate_result), "max_count", 100, NULL);

/* When images maximum is less than min ignore  output. Min is the
 * likelyness value for a pixel to be the center of a ring and ranges from 0
 * to 1 */
g_object_set (G_OBJECT (piv.filter_particle), "min", 0.125, NULL);
/* Consider only pixels that are above 0.8 * max when searching for clusters
* of pixels.  Where max, is the highest intensity in the image */
g_object_set (G_OBJECT (piv.filter_particle), "threshold", 0.8, NULL);

/* Set minumum distance between rings, and how close two different radius
 * are considerend to be same ring */
g_object_set (G_OBJECT (piv.get_dup_circ), "threshold", 8. / scale, NULL);

/* Up to what radii difference is a ring considered an inner or outer ring
 * of two intersecting rings */
g_object_set (G_OBJECT (piv.remove_circle), "threshold", 4. / scale, NULL);

/* Vary up from -radii_range to randii_range the radius to find the
 * polynomial that corresponds to the rings contrast */
g_object_set (G_OBJECT (piv.multi_search), "radii_range", 6 / scale, NULL);
/* Set the minimum contrast a ring should have to be considered a ring */
g_object_set (G_OBJECT (piv.multi_search), "threshold", 0.01, NULL);
/* By how much may the ring center be displaced to find it's actual center and
 * it's actual radius */
g_object_set (G_OBJECT (piv.multi_search), "displacement", 1, NULL);