-#include <pam.h>
-#include <stdint.h>
-#include <inttypes.h>
-#include <assert.h>
-#include <string.h>
-#include <stdlib.h>
-#define eassert assert
-#define debug stdout
+#include "ocr.h"
typedef struct {
unsigned long rgb; /* on screen */
static int height, width;
static char *image;
-static void debug_flush(void) {
+void debug_flush(void) {
eassert(!fflush(debug));
eassert(!ferror(debug));
}
debug_flush();
}
-typedef uint32_t Pixcol;
-#define PSPIXCOL(priscan) priscan##32
-
-typedef struct {
- Pixcol col;
- struct OCRDatabaseNode *then;
-} OCRDatabaseLink;
-
-#define MAXGLYPHCHRS 3
-
-typedef struct OCRDatabaseNode {
- char s[MAXGLYPHCHRS+1]; /* null-terminated; "" means no match here */
- int nlinks, alinks;
- OCRDatabaseLink *links;
-} OCRDatabaseNode;
-
-#define N_OCR_CONTEXTS 2
-static OCRDatabaseNode ocr_contexts[N_OCR_CONTEXTS];
-
-static void load_ocr_database(void) {
- int ctx,nchrs;
- OCRDatabaseNode *current, *additional;
- char chrs[MAXGLYPHCHRS+1];
- Pixcol cv;
- int r,i,j;
-
- FILE *db= fopen("database","r"); eassert(db);
-
- for (;;) {
- r= fscanf(db, "%d %d", &ctx, &nchrs);
- if (r==EOF) break;
- eassert(r==2);
- eassert(ctx>=0 && ctx<N_OCR_CONTEXTS);
- eassert(nchrs>0 && nchrs<=MAXGLYPHCHRS);
-
- for (i=0; i<nchrs; i++) {
- int c;
- r= fscanf(db, "%x", &c); eassert(r==1);
- eassert(c>0 && c<=255);
- chrs[i]= c;
- }
- chrs[nchrs]= 0;
-
- int twidth;
- r= fscanf(db, "%d", &twidth); eassert(r==1);
- current= &ocr_contexts[ctx];
- for (i=0; i<twidth; i++) {
- r= fscanf(db, "%"PSPIXCOL(SCNx), &cv); eassert(r==1);
- for (j=0; j<current->nlinks; j++)
- if (current->links[j].col == cv) {
- current= current->links[j].then;
- goto found_link;
- }
-
- additional= malloc(sizeof(*additional)); eassert(additional);
- additional->s[0]= 0;
- additional->nlinks= additional->alinks= 0;
- additional->links= 0;
- if (current->nlinks==current->alinks) {
- current->alinks++;
- current->alinks<<=1;
- current->links= realloc(current->links,
- sizeof(*current->links) * current->alinks);
- eassert(current->links);
- }
- current->links[current->nlinks].col= cv;
- current->links[current->nlinks].then= additional;
- current->nlinks++;
- current= additional;
-
- found_link:;
- }
-
- eassert(!current->s[0]);
- strcpy(current->s, chrs);
- }
- eassert(!ferror(db));
- eassert(feof(db));
- fclose(db);
-}
-
static void ocr_rectangle(Rect r) {
+ OcrResultGlyph *results, *res;
+
int w= r.br.x - r.tl.x + 1;
int h= r.br.y - r.tl.y + 1;
Pixcol cols[w+1];
}
cols[w]= 0;
- int nspaces=0;
- int ctx=1,i;
- x=0;
-
- for (;;) {
- if (x>w) break;
-
- if (!cols[x]) {
- nspaces++;
- x++;
- if (nspaces>3) ctx=1;
- continue;
- }
-
- OCRDatabaseNode *current=0, *lastmatch=0;
- int startx=x;
- int afterlastmatchx=-1;
- current= &ocr_contexts[ctx];
- for (;;) {
- if (x>w) break;
- Pixcol cv= cols[x];
- for (i=0; i<current->nlinks; i++)
- if (current->links[i].col == cv)
- goto found;
- /* not found */
- break;
- found:
- x++;
- current= current->links[i].then;
- if (current->s[0]) { lastmatch=current; afterlastmatchx=x; }
- }
-
- if (!lastmatch) {
- int x2;
- for (x2=x+1; x2<w && cols[x2]; x2++);
- printf("UNKNOWN x=%d ctx=%d %d..%d\n",x, ctx, startx,x2);
- x++;
- } else {
- printf("OUTPUT x=%d `%s'\n", x, lastmatch->s);
- x= afterlastmatchx;
- ctx= 0;
- }
- }
+ results= ocr(w,h,cols);
+ printf("YES! \"");
+ for (res=0; res->s; res++)
+ printf("%s",res->s);
+ printf("\"\n");
+ eassert(!ferror(stdout));
+ eassert(!fflush(stdout));
}
int main(void) {
Rect thisr, entryr;
int tryrect, colno;
- load_ocr_database();
+ ocr_init();
load_image_and_canonify();
find_structure();