Tesseract 3.02

- Main Page
- Related Pages
- Modules
- Namespaces
- Classes
- Files

- File List
- File Members

All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
Macros | Functions | Variables
blobbox.cpp File Reference
`#include "mfcpch.h"`
`#include "blobbox.h"`
`#include "helpers.h"`

Go to the source code of this file.

## Macros

#define | PROJECTION_MARGIN 10
#define | EXTERN

## Functions

| ELISTIZE (BLOBNBOX) ELIST2IZE(TO_ROW) ELISTIZE(TO_BLOCK) const double kCosSmallAngle=0.866
void | find_cblob_limits (C_BLOB *blob, float leftx, float rightx, FCOORD rotation, float &ymin, float &ymax)
void | find_cblob_vlimits (C_BLOB *blob, float leftx, float rightx, float &ymin, float &ymax)
void | find_cblob_hlimits (C_BLOB *blob, float bottomy, float topy, float &xmin, float &xmax)
C_BLOB * | crotate_cblob (C_BLOB *blob, FCOORD rotation)
TBOX | box_next (BLOBNBOX_IT *it)
TBOX | box_next_pre_chopped (BLOBNBOX_IT *it)
void | vertical_cblob_projection (C_BLOB *blob, STATS *stats)
void | vertical_coutline_projection (C_OUTLINE *outline, STATS *stats)
void | plot_blob_list (ScrollView *win, BLOBNBOX_LIST *list, ScrollView::Color body_colour, ScrollView::Color child_colour)

## Variables

const double | kDefiniteAspectRatio = 2.0
const double | kComplexShapePerimeterRatio = 1.5
const double | kMinMediumSizeRatio = 0.25
const double | kMaxMediumSizeRatio = 4.0

## Macro Definition Documentation

#define EXTERN

Definition at line 30 of file blobbox.cpp.

#define PROJECTION_MARGIN 10

Definition at line 29 of file blobbox.cpp.

## Function Documentation

TBOX box_next | ( | BLOBNBOX_IT * | it | ) |

Definition at line 585 of file blobbox.cpp.

{
BLOBNBOX *blob; //current blob
TBOX result; //total box
blob = it->data ();
result = blob->bounding_box ();
do {
it->forward ();
blob = it->data ();
if (blob->cblob() == NULL)
//was pre-chopped
result += blob->bounding_box ();
}
//until next real blob
while ((blob->cblob() == NULL) || blob->joined_to_prev());
return result;
}

TBOX box_next_pre_chopped | ( | BLOBNBOX_IT * | it | ) |

Definition at line 614 of file blobbox.cpp.

{
BLOBNBOX *blob; //current blob
TBOX result; //total box
blob = it->data ();
result = blob->bounding_box ();
do {
it->forward ();
blob = it->data ();
}
//until next real blob
while (blob->joined_to_prev ());
return result;
}

C_BLOB* crotate_cblob | ( | C_BLOB * | blob,
|  | FCOORD | rotation
| ) |  |

Definition at line 560 of file blobbox.cpp.

{
C_OUTLINE_LIST out_list; //output outlines
//input outlines
C_OUTLINE_IT in_it = blob->out_list ();
//output outlines
C_OUTLINE_IT out_it = &out_list;
for (in_it.mark_cycle_pt (); !in_it.cycled_list (); in_it.forward ()) {
out_it.add_after_then_move (new C_OUTLINE (in_it.data (), rotation));
}
return new C_BLOB (&out_list);
}

ELISTIZE | ( | BLOBNBOX |  | ) | const

pure virtual

void find_cblob_hlimits | ( | C_BLOB * | blob,
|  | float | bottomy,
|  | float | topy,
|  | float & | xmin,
|  | float & | xmax
| ) |  |

Definition at line 525 of file blobbox.cpp.

{
inT16 stepindex; //current point
ICOORD pos; //current coords
ICOORD vec; //rotated step
C_OUTLINE *outline; //current outline
//outlines
C_OUTLINE_IT out_it = blob->out_list ();
xmin = (float) MAX_INT32;
xmax = (float) -MAX_INT32;
for (out_it.mark_cycle_pt (); !out_it.cycled_list (); out_it.forward ()) {
outline = out_it.data ();
pos = outline->start_pos (); //get coords
for (stepindex = 0; stepindex < outline->pathlength (); stepindex++) {
//inside
if (pos.y () >= bottomy && pos.y () <= topy) {
UpdateRange(pos.x(), &xmin, &xmax);
}
vec = outline->step (stepindex);
pos += vec; //move to next
}
}
}

void find_cblob_limits | ( | C_BLOB * | blob,
|  | float | leftx,
|  | float | rightx,
|  | FCOORD | rotation,
|  | float & | ymin,
|  | float & | ymax
| ) |  |

Definition at line 448 of file blobbox.cpp.

{
inT16 stepindex; //current point
ICOORD pos; //current coords
ICOORD vec; //rotated step
C_OUTLINE *outline; //current outline
//outlines
C_OUTLINE_IT out_it = blob->out_list ();
ymin = (float) MAX_INT32;
ymax = (float) -MAX_INT32;
for (out_it.mark_cycle_pt (); !out_it.cycled_list (); out_it.forward ()) {
outline = out_it.data ();
pos = outline->start_pos (); //get coords
pos.rotate (rotation);
for (stepindex = 0; stepindex < outline->pathlength (); stepindex++) {
//inside
if (pos.x () >= leftx && pos.x () <= rightx) {
UpdateRange(pos.y(), &ymin, &ymax);
}
vec = outline->step (stepindex);
vec.rotate (rotation);
pos += vec; //move to next
}
}
}

void find_cblob_vlimits | ( | C_BLOB * | blob,
|  | float | leftx,
|  | float | rightx,
|  | float & | ymin,
|  | float & | ymax
| ) |  |

Definition at line 488 of file blobbox.cpp.

{
inT16 stepindex; //current point
ICOORD pos; //current coords
ICOORD vec; //rotated step
C_OUTLINE *outline; //current outline
//outlines
C_OUTLINE_IT out_it = blob->out_list ();
ymin = (float) MAX_INT32;
ymax = (float) -MAX_INT32;
for (out_it.mark_cycle_pt (); !out_it.cycled_list (); out_it.forward ()) {
outline = out_it.data ();
pos = outline->start_pos (); //get coords
for (stepindex = 0; stepindex < outline->pathlength (); stepindex++) {
//inside
if (pos.x () >= leftx && pos.x () <= rightx) {
UpdateRange(pos.y(), &ymin, &ymax);
}
vec = outline->step (stepindex);
pos += vec; //move to next
}
}
}

void plot_blob_list | ( | ScrollView * | win,
|  | BLOBNBOX_LIST * | list,
|  | ScrollView::Color | body_colour,
|  | ScrollView::Color | child_colour
| ) |  |

Definition at line 1014 of file blobbox.cpp.

{ // colour of child
BLOBNBOX_IT it = list;
for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
it.data()->plot(win, body_colour, child_colour);
}
}

void vertical_cblob_projection | ( | C_BLOB * | blob,
|  | STATS * | stats
| ) |  |

Definition at line 808 of file blobbox.cpp.

{
//outlines of blob
C_OUTLINE_IT out_it = blob->out_list ();
for (out_it.mark_cycle_pt (); !out_it.cycled_list (); out_it.forward ()) {
vertical_coutline_projection (out_it.data (), stats);
}
}

void vertical_coutline_projection | ( | C_OUTLINE * | outline,
|  | STATS * | stats
| ) |  |

Definition at line 828 of file blobbox.cpp.

{
ICOORD pos; //current point
ICOORD step; //edge step
inT32 length; //of outline
inT16 stepindex; //current step
C_OUTLINE_IT out_it = outline->child ();
pos = outline->start_pos ();
length = outline->pathlength ();
for (stepindex = 0; stepindex < length; stepindex++) {
step = outline->step (stepindex);
if (step.x () > 0) {
stats->add (pos.x (), -pos.y ());
} else if (step.x () < 0) {
stats->add (pos.x () - 1, pos.y ());
}
pos += step;
}
for (out_it.mark_cycle_pt (); !out_it.cycled_list (); out_it.forward ()) {
vertical_coutline_projection (out_it.data (), stats);
}
}

## Variable Documentation

const double kComplexShapePerimeterRatio = 1.5

Definition at line 39 of file blobbox.cpp.

const double kDefiniteAspectRatio = 2.0

Definition at line 37 of file blobbox.cpp.

const double kMaxMediumSizeRatio = 4.0

Definition at line 43 of file blobbox.cpp.

const double kMinMediumSizeRatio = 0.25

Definition at line 41 of file blobbox.cpp.