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speckle.cpp
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1 /******************************************************************************
2 ** Filename: speckle.c
3 ** Purpose: Routines used by classifier to filter out speckle.
4 ** Author: Dan Johnson
5 ** History: Mon Mar 11 10:06:14 1991, DSJ, Created.
6 **
7 ** (c) Copyright Hewlett-Packard Company, 1988.
8 ** Licensed under the Apache License, Version 2.0 (the "License");
9 ** you may not use this file except in compliance with the License.
10 ** You may obtain a copy of the License at
11 ** http://www.apache.org/licenses/LICENSE-2.0
12 ** Unless required by applicable law or agreed to in writing, software
13 ** distributed under the License is distributed on an "AS IS" BASIS,
14 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 ** See the License for the specific language governing permissions and
16 ** limitations under the License.
17 ******************************************************************************/
18 /*-----------------------------------------------------------------------------
19 Include Files and Type Defines
20 -----------------------------------------------------------------------------*/
21 #include "speckle.h"
22
23 #include "blobs.h"
24 #include "ratngs.h"
25 #include "params.h"
26
27 /*-----------------------------------------------------------------------------
28 Global Data Definitions and Declarations
29 -----------------------------------------------------------------------------*/
31 double_VAR(speckle_large_max_size, 0.30, "Max large speckle size");
32
33 double_VAR(speckle_small_penalty, 10.0, "Small speckle penalty");
34
35 double_VAR(speckle_large_penalty, 10.0, "Large speckle penalty");
36
37 double_VAR(speckle_small_certainty, -1.0, "Small speckle certainty");
38
39 /*-----------------------------------------------------------------------------
40 Public Code
41 -----------------------------------------------------------------------------*/
42 /*---------------------------------------------------------------------------*/
62 void AddLargeSpeckleTo(BLOB_CHOICE_LIST *Choices) {
63 assert(Choices != NULL);
64 BLOB_CHOICE *blob_choice;
65 BLOB_CHOICE_IT temp_it;
66 temp_it.set_to_list(Choices);
67
68 // If there are no other choices, use the small speckle penalty plus
69 // the large speckle penalty.
70 if (Choices->length() == 0) {
71 blob_choice =
72 new BLOB_CHOICE(0, speckle_small_certainty + speckle_large_penalty,
73 speckle_small_certainty, -1, -1, NULL, 0, 0, false);
74 temp_it.add_to_end(blob_choice);
75 return;
76 }
77
78 // If there are other choices, add a null choice that is slightly worse
79 // than the worst choice so far.
80 temp_it.move_to_last();
81 blob_choice = temp_it.data(); // pick the worst choice
82 temp_it.add_to_end(
83 new BLOB_CHOICE(0, blob_choice->rating() + speckle_large_penalty,
84 blob_choice->certainty(), -1, -1, NULL, 0, 0, false));
85 } /* AddLargeSpeckleTo */
86
87
88 /*---------------------------------------------------------------------------*/
103 BOOL8 LargeSpeckle(TBLOB *blob) {
104 double speckle_size = BASELINE_SCALE * speckle_large_max_size;
105 TBOX bbox = blob->bounding_box();
106 return (bbox.width() < speckle_size && bbox.height() < speckle_size);
107 } /* LargeSpeckle */