SANEI  1.2.1.194-728ca
sanei_ir.h
Go to the documentation of this file.
1 
21 #ifndef SANEI_IR_H
22 #define SANEI_IR_H
23 
24 #include <stdint.h>
25 
26 #define SAMPLE_SIZE 40000
28 #define HISTOGRAM_SHIFT 8
29 #define HISTOGRAM_SIZE (1 << HISTOGRAM_SHIFT)
30 
31 #define SAFE_LOG(x) ( ((x) > 0.0) ? log ((x)) : (0.0) )
33 #define MAD_WIN2_SIZE(x) ( (((x) * 4) / 3) | 1 )
35 typedef uint16_t SANE_Uint;
36 
40 typedef union
41 {
42  uint8_t *b8;
43  uint16_t *b16;
44 }
45 SANEI_IR_bufptr;
46 
47 
52 extern void sanei_ir_init (void);
53 
68 extern SANE_Status
69 sanei_ir_create_norm_histogram (const SANE_Parameters * params,
70  const SANE_Uint *img_data,
71  double ** histogram);
72 
95 extern SANE_Status
96 sanei_ir_threshold_yen (const SANE_Parameters * params,
97  double * norm_histo, int *thresh);
98 
115 extern SANE_Status
116 sanei_ir_threshold_otsu (const SANE_Parameters * params,
117  double * norm_histo, int *thresh);
118 
138 extern SANE_Status
139 sanei_ir_threshold_maxentropy (const SANE_Parameters * params,
140  double * norm_histo, int *thresh);
141 
158 SANE_Status
159 sanei_ir_RGB_luminance (SANE_Parameters * params, const SANE_Uint **in_img,
160  SANE_Uint **out_img);
161 
180 extern SANE_Status
181 sanei_ir_to_8bit (SANE_Parameters * params, const SANE_Uint *in_img,
182  SANE_Parameters * out_params, SANE_Uint **out_img);
183 
196 SANE_Status sanei_ir_ln_table (int len, double **lut_ln);
197 
222 extern SANE_Status
223 sanei_ir_spectral_clean (const SANE_Parameters * params, double *lut_ln,
224  const SANE_Uint *red_data,
225  SANE_Uint *ir_data);
226 
245 extern SANE_Status
246 sanei_ir_filter_mean (const SANE_Parameters * params,
247  const SANE_Uint *in_img, SANE_Uint *out_img,
248  int win_rows, int win_cols);
249 
250 
282 extern SANE_Status
283 sanei_ir_filter_madmean (const SANE_Parameters * params,
284  const SANE_Uint *in_img,
285  SANE_Uint ** out_img, int win_size,
286  int a_val, int b_val);
287 
288 
297 void
298 sanei_ir_add_threshold (const SANE_Parameters * params,
299  const SANE_Uint *in_img,
300  SANE_Uint * mask_img, int threshold);
301 
302 
322 void
323 sanei_ir_manhattan_dist (const SANE_Parameters * params,
324  const SANE_Uint * mask_img, unsigned int *dist_map,
325  unsigned int *idx_map, unsigned int erode);
326 
327 
339 void
340 sanei_ir_dilate (const SANE_Parameters * params, SANE_Uint * mask_img,
341  unsigned int *dist_map, unsigned int *idx_map, int by);
342 
357 void
358 sanei_ir_find_crop (const SANE_Parameters * params,
359  unsigned int * dist_map, int inner, int * edges);
360 
384 SANE_Status
385 sanei_ir_dilate_mean (const SANE_Parameters * params,
386  SANE_Uint **in_img,
387  SANE_Uint *mask_img,
388  int dist_max, int expand, int win_size,
389  SANE_Bool smooth, int inner,
390  int *crop);
391 
392 
393 #endif /* not SANEI_IR_H */
sanei_ir_create_norm_histogram
SANE_Status sanei_ir_create_norm_histogram(const SANE_Parameters *params, const SANE_Uint *img_data, double **histogram)
Create the normalized histogram of a grayscale image.
sanei_ir_add_threshold
void sanei_ir_add_threshold(const SANE_Parameters *params, const SANE_Uint *in_img, SANE_Uint *mask_img, int threshold)
Add dark pixels to mask from static threshold.
sanei_ir_threshold_maxentropy
SANE_Status sanei_ir_threshold_maxentropy(const SANE_Parameters *params, double *norm_histo, int *thresh)
Implements a Maximum Entropy thresholding method.
sanei_ir_dilate
void sanei_ir_dilate(const SANE_Parameters *params, SANE_Uint *mask_img, unsigned int *dist_map, unsigned int *idx_map, int by)
Dilate or erode a mask image.
sanei_ir_filter_mean
SANE_Status sanei_ir_filter_mean(const SANE_Parameters *params, const SANE_Uint *in_img, SANE_Uint *out_img, int win_rows, int win_cols)
Optimized mean filter.
sanei_ir_manhattan_dist
void sanei_ir_manhattan_dist(const SANE_Parameters *params, const SANE_Uint *mask_img, unsigned int *dist_map, unsigned int *idx_map, unsigned int erode)
Calculates minimal Manhattan distances for an image mask.
sanei_ir_threshold_otsu
SANE_Status sanei_ir_threshold_otsu(const SANE_Parameters *params, double *norm_histo, int *thresh)
Implements Otsu's thresholding method.
sanei_ir_RGB_luminance
SANE_Status sanei_ir_RGB_luminance(SANE_Parameters *params, const SANE_Uint **in_img, SANE_Uint **out_img)
Generate gray scale luminance image from separate R, G, B images.
sanei_ir_to_8bit
SANE_Status sanei_ir_to_8bit(SANE_Parameters *params, const SANE_Uint *in_img, SANE_Parameters *out_params, SANE_Uint **out_img)
Convert image from >8 bit depth to an 8 bit image.
sanei_ir_find_crop
void sanei_ir_find_crop(const SANE_Parameters *params, unsigned int *dist_map, int inner, int *edges)
Suggest cropping for dark margins of positive film.
sanei_ir_spectral_clean
SANE_Status sanei_ir_spectral_clean(const SANE_Parameters *params, double *lut_ln, const SANE_Uint *red_data, SANE_Uint *ir_data)
Reduces red spectral overlap from an infrared image plane.
sanei_ir_dilate_mean
SANE_Status sanei_ir_dilate_mean(const SANE_Parameters *params, SANE_Uint **in_img, SANE_Uint *mask_img, int dist_max, int expand, int win_size, SANE_Bool smooth, int inner, int *crop)
Dilate clean image parts into dirty ones and smooth int inner,.
sanei_ir_init
void sanei_ir_init(void)
Initialize sanei_ir.
sanei_ir_threshold_yen
SANE_Status sanei_ir_threshold_yen(const SANE_Parameters *params, double *norm_histo, int *thresh)
Implements Yen's thresholding method.
sanei_ir_ln_table
SANE_Status sanei_ir_ln_table(int len, double **lut_ln)
Allocate and initialize logarithmic lookup table.
sanei_ir_filter_madmean
SANE_Status sanei_ir_filter_madmean(const SANE_Parameters *params, const SANE_Uint *in_img, SANE_Uint **out_img, int win_size, int a_val, int b_val)
Find noise by adaptive thresholding.
SANEI_IR_bufptr
Pointer to access values of different bit depths.
Definition: sanei_ir.h:41
SANEI_IR_bufptr::b16
uint16_t * b16
8, <= 16 bits
Definition: sanei_ir.h:43
SANEI_IR_bufptr::b8
uint8_t * b8
<= 8 bits
Definition: sanei_ir.h:42
Generated on Tue Apr 16 2024 20:48:35 for SANEI by doxygen 1.9.1