#include <inttypes.h>
#include <assert.h>
#include <string.h>
+#include <stdlib.h>
#define eassert assert
+#define debug stdout
typedef struct {
unsigned long rgb; /* on screen */
char c; /* canonical */
} CanonColourInfo;
+static int height, width;
+static char *image;
+
+static void debug_flush(void) {
+ eassert(!fflush(debug));
+ eassert(!ferror(debug));
+}
+
+typedef struct {
+ int x, y;
+} Point;
+
+typedef struct { /* both inclusive */
+ Point tl;
+ Point br;
+} Rect;
+
+static inline char get(int x, int y) { return image[y * width + x]; }
+static inline char get_p(Point p) { return get(p.x,p.y); }
+
+
+#define START_MAIN {200,200}
+#define MIN_COLUMNS 6
+#define INTERESTING_COLUMNS 6
+#define MAX_COLUMNS 7
+
+static Rect mainr = { START_MAIN,START_MAIN };
+static int commbasey, comminty;
+static int colrightx[INTERESTING_COLUMNS];
+
+
static const CanonColourInfo canoncolourinfos[]= {
{ 0x475A5E, '*' }, /* edge */
+ { 0x2C5F7A, '*' }, /* edge just under box heading shadow */
{ 0x7D9094, '+' }, /* interbox */
{ 0xBDC5BF, ' ' }, /* background - pale */
{ 0xADB5AF, ' ' }, /* background - dark */
{ 0,0 }
};
-static int height, width;
-static char *image;
+static void require_rectangle(int tlx, int tly, int brx, int bry,
+ const char *ok) {
+ int x,y;
+ for (x=tlx; x<=brx; x++)
+ for (y=tly; y<=bry; y++) {
+ int c= get(x,y);
+ assert(strchr(ok,c));
+ }
+}
+static void require_rectangle_r(Rect rr, const char *ok) {
+ require_rectangle(rr.tl.x,rr.tl.y, rr.br.x,rr.br.y, ok);
+}
+
+static void debug_rect(const char *what, int whati, Rect rr) {
+ int y,r,w;
+ fprintf(debug, "%s %d: %d,%d..%d,%d:\n", what, whati,
+ rr.tl.x,rr.tl.y, rr.br.x,rr.br.y);
+ w= rr.br.x - rr.tl.x + 1;
+ for (y=rr.tl.y; y<=rr.br.y; y++) {
+ fprintf(debug, "%4d%*s|", y, rr.tl.x,"");
+ r= fwrite(image + y*width + rr.tl.x, 1, w, debug);
+ eassert(r==w);
+ fputc('|',debug);
+ fputc('\n',debug);
+ }
+ debug_flush();
+}
+
+#define WALK_UNTIL(point,coord,increm,last,edge) \
+ for (;;) { \
+ if ((point).coord == (last)+(increm)) break; \
+ if (get_p((point)) == (edge)) { (point).coord -= (increm); break; } \
+ (point).coord += (increm); \
+ }
+
+#define WALK_UNTIL_MUST(point,coord,increm,last,edge) \
+ do { \
+ WALK_UNTIL(point,coord,increm,last,edge); \
+ eassert((point).coord != (last)+(increm)); \
+ } while(0)
+
+static void find_structure(void) {
+ Rect whole = { {0,0}, {width-1,height-1} };
+
+ WALK_UNTIL_MUST(mainr.tl, x,-1, whole.tl.x, '*');
+ WALK_UNTIL_MUST(mainr.tl, y,-1, whole.tl.y, '*');
+ WALK_UNTIL_MUST(mainr.br, x,+1, whole.br.x, '*');
+ WALK_UNTIL_MUST(mainr.br, y,+1, whole.br.y, '*');
+
+ require_rectangle(mainr.tl.x-1, mainr.tl.y, mainr.tl.x-1, mainr.br.y, "*");
+ require_rectangle(mainr.br.x+1, mainr.tl.y, mainr.br.x+1, mainr.br.y, "*");
+ require_rectangle(mainr.tl.x, mainr.tl.y-1, mainr.br.x, mainr.tl.y-1, "*");
+ require_rectangle(mainr.tl.x, mainr.br.y+1, mainr.br.x, mainr.br.y+1, "*");
+
+#define CHECK_STRIP_BORDER(tlbr,xy,increm) \
+ do { \
+ Point csb_p; \
+ Rect csb_r; \
+ csb_p= mainr.tl; \
+ csb_p.xy= mainr.tlbr.xy; \
+ if (get_p(csb_p)=='+') { \
+ csb_r= mainr; \
+ csb_r.tl.xy= csb_p.xy; \
+ csb_r.br.xy= csb_p.xy; \
+ require_rectangle_r(csb_r, "+"); \
+ mainr.tlbr.xy += increm; \
+ } \
+ } while(0)
+
+ debug_rect("mainr",0, mainr);
+
+ CHECK_STRIP_BORDER(tl,x,+1);
+ CHECK_STRIP_BORDER(tl,y,+1);
+ CHECK_STRIP_BORDER(br,x,-1);
+ CHECK_STRIP_BORDER(br,y,-1);
+
+ debug_rect("mainr",1, mainr);
+
+ Point up = START_MAIN;
+ WALK_UNTIL_MUST(up, y,-1, mainr.tl.y, '+');
+
+ Point down = START_MAIN;
+ down.y++;
+ WALK_UNTIL_MUST(down, y,+1, mainr.br.y, '+');
+
+ int xscaleunit, y,x;
+ for (y=0, xscaleunit=1; y<4; y++, xscaleunit*=10) {
+ fprintf(debug," ");
+ for (x=0; x<=width; x++) {
+ if (x % xscaleunit) fputc(' ',debug);
+ else fprintf(debug,"%d",(x / xscaleunit)%10);
+ }
+ fputc('\n',debug);
+ }
+
+ commbasey= up.y;
+ comminty= down.y - up.y + 2;
+ fprintf(debug, "up.y=%d down.y=%d commbasey=%d comminty=%d\n",
+ up.y,down.y, commbasey,comminty);
+
+ Point across= { mainr.tl.x, commbasey };
+ int colno=0;
+ for (;;) {
+ eassert(get_p(across) != '+');
+ WALK_UNTIL(across, x,+1, mainr.br.x, '+');
+ eassert(colno < MAX_COLUMNS);
+ int colrx= across.x;
+ if (colrx > mainr.br.x) colrx= mainr.br.x;
+ if (colno < INTERESTING_COLUMNS) {
+ colrightx[colno]= colrx;
+ fprintf(debug,"colrightx[%d]= %d\n",colno,colrx);
+ } else {
+ fprintf(debug,"extra colr %d %d\n",colno,colrx);
+ }
+
+ colno++;
+
+ if (across.x >= mainr.br.x-1)
+ break;
+
+ across.x++;
+ require_rectangle(across.x,mainr.tl.y, across.x,mainr.br.y, "+");
+ across.x++;
+ }
+ eassert(colno >= MIN_COLUMNS);
+}
+
+static void find_commodity(int offset, Rect *rr) {
+ /* rr->tl.x==-1 if offset out of range */
+ rr->tl.y= commbasey - offset*comminty;
+ rr->br.y= rr->tl.y + comminty-2;
+ if (rr->tl.y < mainr.tl.y || rr->br.y > mainr.br.y) { rr->tl.x=-1; return; }
+ if (rr->tl.y > mainr.tl.y)
+ require_rectangle(rr->tl.x,rr->tl.y-1, rr->br.x,rr->tl.y-1, "+");
+ if (rr->br.y < mainr.tl.y)
+ require_rectangle(rr->tl.x,rr->br.y+1, rr->br.x,rr->br.y+1, "+");
+
+ rr->tl.x= mainr.tl.x;
+ rr->br.x= mainr.br.x;
+}
+
+static void find_table_entry(Rect commod, int colno, Rect *cellr) {
+ cellr->tl.y= commod.tl.y;
+ cellr->br.y= commod.br.y;
+ cellr->tl.x= !colno ? commod.tl.x : colrightx[colno-1]+2;
+ cellr->br.x= colrightx[colno];
+ debug_rect("cell", colno, *cellr);
+ require_rectangle_r(*cellr, " o");
+}
static void load_image_and_canonify(void) {
struct pam inpam;
image[y*width + x]= cci->c;
break;
}
- if (y==234 && x==82) {
- printf("y=%d/%d x=%d/%d rgb=%d,%d,%d rgb_l=%lx c=%c\n",
- y,height,x,width, rgb[0],rgb[1],rgb[2], rgb_l, image[y*width+x]);
+ }
+ fprintf(debug, "%4d ",y);
+ r= fwrite(image + y*width, 1,width, debug); eassert(r==width);
+ fputc('\n',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) {
+ int w= r.br.x - r.tl.x + 1;
+ int h= r.br.y - r.tl.y + 1;
+ Pixcol cols[w+1];
+ int x,y;
+ for (x=0; x<w; x++) {
+ Pixcol cx, rv;
+ for (y=0, cx=0, rv=1; y<h; y++, rv<<=1) {
+ switch (get(x+r.tl.x, y+r.tl.y)) {
+ case ' ': break;
+ case 'o': cx |= rv; break;
+ default: eassert(!"wrong pixel");
}
}
- r= fwrite(image + y*width, 1,width, stdout); eassert(r==width);
- putchar('\n');
+ cols[x]= cx;
+ }
+ 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;
+ }
}
- eassert(!fflush(stdout));
- eassert(!ferror(stdout));
}
-
+
int main(void) {
+ Rect thisr, entryr;
+ int tryrect, colno;
+
+ load_ocr_database();
load_image_and_canonify();
- /*
- find_main_rectangle();
- repeatedly_find_top_thing();
- */
+ find_structure();
+
+ for (tryrect= +height; tryrect >= -height; tryrect--) {
+ find_commodity(tryrect, &thisr);
+ if (thisr.tl.x < 0)
+ continue;
+ debug_rect("commod",tryrect, thisr);
+
+ for (colno=0; colno<MIN_COLUMNS; colno++) {
+ find_table_entry(thisr,colno,&entryr);
+ ocr_rectangle(entryr);
+ }
+ }
return 0;
}
~yarrgweb / ypp-sc-tools.db-test.git / blobdiff