1
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mirror of https://github.com/moparisthebest/Simba synced 2024-11-05 00:45:14 -05:00

First OCR Function - GetTextAtEx. Currently only for UpText - still much of a stub.

git-svn-id: http://www.villavu.com/repositories/merlijn/mufasa@166 3f818213-9676-44b0-a9b4-5e4c4e03d09d
This commit is contained in:
Wizzup? 2009-11-01 11:07:46 +00:00
parent f304e759fa
commit 8a101c65f5
11 changed files with 1968 additions and 88 deletions

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@ -30,15 +30,15 @@
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</local>
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@ -51,9 +51,11 @@
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@ -65,9 +67,11 @@
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@ -79,146 +83,194 @@
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@ -227,12 +279,23 @@
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</CodeGeneration>
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<CompilerPath Value="$(CompPath)"/>
</Other>
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<Item1>
<Source Value="../../Units/MMLCore/ocr.pas"/>
<Line Value="510"/>
</Item1>
</BreakPoints>
<Exceptions Count="3">
<Item1>
<Name Value="EAbort"/>

View File

@ -9,7 +9,8 @@ uses
Classes, SysUtils, CustApp,
Forms,Interfaces,
LCLIntf,
Client
Client,
bitmaps
{ you can add units after this };
@ -35,7 +36,8 @@ var
ErrorMsg: String;
Time: DWord;
C: TClient;
I, W, H, X, Y: Integer;
I{, W, H, X, Y}: Integer;
bmp: TMufasaBitmap;
begin
// quick check parameters
@ -55,8 +57,10 @@ begin
{ add your program here }
C := TClient.Create;
{$WARNING Change This Path!}
C.MOCR.InitTOCR('/home/merlijn/Programs/mufasa/Fonts/');
C.MWindow.GetDimensions(W, H);
{C.MWindow.GetDimensions(W, H);
Time := GetTickCount;
for i := 0 to 100 do
C.MFinder.FindColor(X, Y, 0, 0, 0, W - 1, H - 1);
@ -69,11 +73,27 @@ begin
end else
begin
writeln('not found!');
end;
end; }
bmp := TMufasaBitmap.Create;
{$WARNING Change This Path!}
bmp.LoadFromFile('/home/merlijn/Programs/mufasa/UpText/text5.bmp');
writeln(inttostr(bmp.Width) + ', ' + inttostr(bmp.height));
C.MWindow.SetTarget(bmp);
Time := GetTickCount;
for i := 0 to 100 do
C.MOCR.GetUpTextAt(0,0);
writeln('Time: ' + FloatToStr(((GetTickCount - Time) / (i + 1))));
writeln(C.MOCR.GetUpTextAt(0,0));
C.Free;
bmp.OnDestroy:=nil;
bmp.Free;
// stop program loop

1014
Units/Linux/xinput.pas Normal file

File diff suppressed because it is too large Load Diff

131
Units/Linux/xtest.pas Normal file
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@ -0,0 +1,131 @@
unit XTest;
{$mode objfpc}{$H+}
{$linklib Xtst}
interface
uses
Classes, SysUtils, x, xutil, xlib, ctypes, XKB, xinput;
{ type
PXDevice = Pointer; // ^XDevice ? }
const
X_XTestGetVersion = 0;
X_XTestCompareCursor = 1;
X_XTestFakeInput = 2;
X_XTestGrabControl = 3;
XTestNumberEvents = 0;
XTestNumberErrors = 0;
XTestMajorVersion = 2;
XTestMinorVersion = 2;
XTestExtensionName = 'XTEST';
function XTestQueryExtension(dpy:PDisplay; event_basep, error_basep, majorp, minorp:pcint):CBool; cdecl; external;
function XTestCompareCursorWithWindow(dpy:PDisplay; window:TWindow; cursor: TCursor):CBool; cdecl; external;
function XTestCompareCurrentCursorWithWindow(dpy:pDisplay; window:TWindow):CBool; cdecl; external;
function XTestFakeKeyEvent(dpy:PDisplay; keycode: cuint; is_press: CBool; delay: cuint):cint;cdecl; external;
function XTestFakeButtonEvent(dpy:PDisplay; button: cuint; is_press: CBool; delay: cuint):cint;cdecl; external;
function XTestFakeMotionEvent(dpy:PDisplay; screen, x,y: cint; delay :cuint):cint;cdecl; external;
function XTestFakeRelativeMotionEvent(dpy:PDisplay; x,y,delay: cuint):cint;cdecl; external;
function XTestFakeDeviceKeyEvent(dpy:PDisplay; dev:pXDevice; keycode:cuint; is_press:cbool;
axes:pcint; n_axes:cint; delay:cuint):cint;cdecl; external;
function XTestFakeDeviceButtonEvent(dpy:PDisplay; dev:pXDevice; button:cuint; is_press:cbool; axes:pcint;
n_axes:cint; delay:cuint):cint;cdecl; external;
function XTestFakeProximityEvent(dpy:PDisplay; dev:pXDevice; in_prox:cbool; axes:pcint; n_axes:cint;
delay:cuint):cint;cdecl; external;
function XTestFakeDeviceMotionEvent(dpy:PDisplay; dev:pXDevice;
is_relative:cbool; first_axis:cint; axes:pcint; n_axes:cint; delay:cuint):cint;cdecl; external;
function XTestGrabControl(dpy:PDisplay; impervious:cbool):cint;cdecl; external;
procedure XTestSetGContextOfGC(gc: TGC; gid:TGContext); cdecl; external;
procedure XTestSetVisualIDOfVisual(visual:PVisual; visualid: TVisualID); cdecl; external;
function XTestDiscard(dpy:pDisplay):TStatus; cdecl; external;
procedure mouse_move(x,y: integer);
procedure mouse_click(left:boolean);
procedure keytest;
procedure keystest(s:string);
implementation
function thing_to_keycode(D: PDisplay; thing: string): TKeyCode;
var
kc: TKeyCode;
ks: TKeySym;
begin
ks := XStringToKeysym(@thing[1]);
if(ks = NoSymbol) then
begin
writeln('Can''t resolve keysym for ' + thing);
result := thing_to_keycode(D, 'space');
exit;
end;
kc := XKeysymToKeycode(D, ks);
result := kc;
end;
procedure mouse_move(x,y: integer);
var
d: PDisplay;
begin
d := XOpenDisplay(nil);
XTestFakeMotionEvent(d, -1, x, y, CurrentTime);
XCloseDisplay(d);
end;
procedure mouse_click(left:boolean);
var
d: PDisplay;
begin
d := XOpenDisplay(nil);
if left then
begin
XTestFakeButtonEvent(d, Button1, True, CurrentTime);
XTestFakeButtonEvent(d, Button1, False, CurrentTime);
end
else
begin
XTestFakeButtonEvent(d, Button3, True, CurrentTime);
XTestFakeButtonEvent(d, Button3, False, CurrentTime);
end;
XCloseDisplay(d);
end;
procedure send_key(D: PDisplay; c: char);
begin
XTestFakeKeyEvent(d, thing_to_keycode(d, c), True, CurrentTime);
XTestFakeKeyEvent(d, thing_to_keycode(d, c), False, CurrentTime);
end;
procedure send_keys(d:pdisplay; s:string);
var
i: integer;
begin
for i := 1 to length(s) do
begin
send_key(d, s[i]);
XFlush(d);
end;
end;
procedure keytest;
var
d:pdisplay;
begin
d := XOpenDisplay(nil);
send_key(d, 'a');
XCloseDisplay(d);
end;
procedure keystest(s:string);
var
d:pdisplay;
begin
d := XOpenDisplay(nil);
send_keys(d, s);
XCloseDisplay(d);
end;
end.

View File

@ -46,3 +46,8 @@ function Unfreeze: boolean;
begin
result := CurrThread.Client.MWindow.Unfreeze;
end;
procedure SetTargetArray(P: Integer; Size: TPoint);
begin
CurrThread.Client.MWindow.SetTarget(PRGB32(P), Size);
end;

View File

@ -67,6 +67,7 @@ Sender.AddFunction(@Unfreeze, 'function unfreeze: boolean;');
Sender.AddFunction(@GetClientDimensions, 'procedure GetClientDimensions(var w, h:integer);');
Sender.AddFunction(@SetTargetBitmap,'procedure SetTargetBitmap(Bitmap : integer);');
Sender.AddFunction(@SetDesktopAsClient,'procedure SetDesktopAsClient');
Sender.AddFunction(@SetTargetArray, 'procedure SetTargetArray(P: Integer; Size: TPoint);');
{other}

View File

@ -188,6 +188,7 @@ end;
{$I PSInc/Wrappers/other.inc}
{$I PSInc/Wrappers/bitmap.inc}
{$I PSInc/Wrappers/window.inc}
{$I PSInc/Wrappers/colour.inc}
{$I PSInc/Wrappers/math.inc}
{$I PSInc/Wrappers/mouse.inc}

View File

@ -28,7 +28,7 @@ unit files;
interface
uses
Classes, SysUtils;
Classes, SysUtils, MufasaTypes;
type
TMufasaFile = record
@ -62,10 +62,31 @@ type
end;
// We don't need one per object. :-)
function GetFiles(Path, Ext: string): TStringArray;
implementation
uses
{$IFDEF MSWINDOWS}Windows,{$ENDIF} IniFiles;
function GetFiles(Path, Ext: string): TstringArray;
var
SearchRec : TSearchRec;
c : integer;
begin
c := 0;
if FindFirst(Path + '*.' + ext, faAnyFile, SearchRec) = 0 then
begin
repeat
inc(c);
SetLength(Result,c);
Result[c-1] := SearchRec.Name;
until FindNext(SearchRec) <> 0;
SysUtils.FindClose(SearchRec);
end;
end;
constructor TMFiles.Create;
begin
inherited Create;

View File

@ -32,7 +32,7 @@ uses
mufasatypes, // for common mufasa types
windowutil // for mufasa window utils
{$IFDEF LINUX}
,x, xlib // for X* stuff
,ctypes,x, xlib{,xtest,keysym} // for X* stuff
// do non silent keys with XTest.
{$ENDIF};
type
@ -45,6 +45,9 @@ type
procedure MouseButtonAction(x,y : integer; mClick: TClickType; mPress: TMousePress);
procedure ClickMouse(X, Y: Integer; mClick: TClickType);
procedure KeyUp(key: Integer);
procedure KeyDown(key: Integer);
{
Possibly change to GetMouseButtonStates? Then people can get the
states bitwise. Like X and WinAPI.
@ -121,6 +124,18 @@ begin
inherited;
end;
procedure TMInput.KeyUp(key: Integer);
begin
end;
procedure TMInput.KeyDown(key: Integer);
begin
end;
procedure TMInput.GetMousePos(var X, Y: Integer);
{$IFDEF LINUX}
var
@ -223,7 +238,7 @@ begin
mouse_Right: Event.xbutton.button:= Button3;
end;
event.xbutton.send_event := TBool(1);
event.xbutton.send_event := TBool(1); // true if this came from a "send event"
event.xbutton.same_screen:= TBool(1);
event.xbutton.subwindow:= 0; // this can't be right.
event.xbutton.root := TClient(Client).MWindow.DesktopWindow;

View File

@ -48,6 +48,8 @@ type
TTargetWindowMode = (w_BMP, w_Window, w_HDC, w_ArrayPtr, w_XWindow);
TClickType = (mouse_Left, mouse_Right, mouse_Middle);
TMousePress = (mouse_Down, mouse_Up);
TStringArray = array of String;
TPointArray = array of TPoint;
T2DPointArray = array of TPointArray;
TVariantArray = Array of Variant;

View File

@ -28,33 +28,640 @@ unit ocr;
interface
uses
Classes, SysUtils;
Classes, SysUtils, MufasaTypes, bitmaps, math,
{Begin To-Remove units. Replace ReadBmp with TMufasaBitmap stuff later.}
FPImgCanv, graphtype, intfgraphics,graphics;
{End To-Remove unit}
type
TNormArray = array of integer;
TocrGlyphMask = record
ascii: char;
width,height: integer;
l,r,t,b: integer;
mask: TNormArray;
end;
TocrGlyphMaskArray = array of TocrGlyphMask;
TocrGlyphMetric = record
xoff,yoff: integer;
width,height: integer;
end;
TocrData = record
ascii: array[0..255] of TocrGlyphMetric;
pos: array of array of integer;
pos_adj: array of real;
neg: array of array of integer;
neg_adj: array of real;
map: array of char;
width,height: integer;
inputs,outputs: integer;
end;
TocrDataArray = array of TocrData;
{ We already have PRGB32 -> To be removed later }
type
tRGB = packed record
B, G, R, A: Byte;
end;
tRGBArray = array of tRGB;
{Begin To be removed}
Tbmp = record
data: array of tRGB;
width,height: integer;
end;
{End To be removed}
tLab = record
L,a,b: real;
end;
TMOCR = class(TObject)
constructor Create(Owner: TObject);
destructor Destroy; override;
function InitTOCR(path: string): boolean;
function GetUpTextAt(atX, atY: integer): string;
private
Client: TObject;
OCRData: TocrDataArray;
OCRPath: string;
end;
implementation
uses
client;
function ReadBMP(path: string): Tbmp;
var
LazIntf : TLazIntfImage;
RawImageDesc : TRawImageDescription;
data: array of tRGB;
begin
if FileExists(path) then
begin;
LazIntf := TLazIntfImage.Create(0,0);
RawImageDesc.Init_BPP32_B8G8R8_BIO_TTB(LazIntf.Width,LazIntf.Height);
LazIntf.DataDescription := RawImageDesc;
LazIntf.LoadFromFile(path);
Result.width := LazIntf.Width;
Result.height := LazIntf.Height;
SetLength(data,LazIntf.Width*LazIntf.Height);
Move(LazIntf.PixelData[0],data[0],LazIntf.Width*LazIntf.Height*sizeOf(tRGB));
Result.data:= data;
LazIntf.Free;
end;
end;
{initalizes the remaining fields from a TocrGlyphMask and finds the global bounds}
procedure findBounds(glyphs: TocrGlyphMaskArray; var width,height: integer);
var
i,x,y,c,w,h: integer;
l,r,t,b: integer;
dat: TNormArray;
begin
width:= 0;
height:= 0;
for c:= 0 to length(glyphs) - 1 do
begin
dat:= glyphs[c].mask;
w:= glyphs[c].width;
h:= glyphs[c].height;
l:= w;
r:= 0;
t:= h;
b:= 0;
for i:= 0 to w*h-1 do
begin
if dat[i] = 1 then
begin
x:= i mod w;
y:= i div w;
if x > r then r:= x;
if x < l then l:= x;
if y > b then b:= y;
if y < t then t:= y;
end;
end;
if l = w then l:= 0;
if t = h then t:= 0;
glyphs[c].r:= r;
glyphs[c].l:= l;
glyphs[c].b:= b;
glyphs[c].t:= t;
if (r - l + 1) > width then width:= r - l + 1;
if (b - t + 1) > height then height:= b - t + 1;
end;
end;
{Use whatever you want if you don't like this}
function GetFiles(Path, Ext: string): TstringArray;
var
SearchRec : TSearchRec;
c : integer;
begin
c := 0;
if FindFirst(Path + '*.' + ext, faAnyFile, SearchRec) = 0 then
begin
repeat
inc(c);
SetLength(Result,c);
Result[c-1] := SearchRec.Name;
until FindNext(SearchRec) <> 0;
SysUtils.FindClose(SearchRec);
end;
end;
{This Loads the actual data from the .bmp, but does not init all fields}
function LoadGlyphMasks(path: string): TocrGlyphMaskArray;
var
strs: array of string;
bmp: array of Tbmp; {-> TMufasaBitmap, and why use an array? }
len,size,i,j: integer;
color: tRGB;
begin
strs:= GetFiles(path,'bmp');
len:= length(strs);
SetLength(result,len);
SetLength(bmp,len);
for i:= 0 to len-1 do
begin
bmp[i]:= ReadBmp(path + strs[i]);
size:= bmp[i].width*bmp[i].height;
SetLength(result[i].mask,size);
for j:= 0 to size-1 do
begin
color:= bmp[i].data[j];
if (color.r = 255) and (color.g = 255) and (color.b = 255) then
result[i].mask[j]:= 1
else
result[i].mask[j]:= 0;
end;
result[i].width:= bmp[i].width;
result[i].height:= bmp[i].height;
SetLength(strs[i],Length(strs[i])-4);
result[i].ascii:= chr(strtoint(strs[i]));
end;
end;
{Fully initalizes a TocrData structure, this is LoadFont or whatever, call it first}
function InitOCR(path: string): TocrData;
var
masks: TocrGlyphMaskArray;
t,b,l,r,w,h,mw: integer;
x,y: integer;
c,i,len,size: integer;
pos: integer;
ascii: char;
begin
masks:= LoadGlyphMasks(path);
w:= 0;
h:= 0;
findBounds(masks,w,h);
len:= Length(masks);
result.width:= w;
result.height:= h;
size:= w * h;
SetLength(result.pos,len,size);
SetLength(result.pos_adj,len);
SetLength(result.neg,len,size);
SetLength(result.neg_adj,len);
SetLength(result.map,len);
for i:= 0 to len - 1 do
begin
ascii:= masks[i].ascii;
pos:= 0;
l:= masks[i].l;
r:= masks[i].r;
b:= masks[i].b;
t:= masks[i].t;
mw:= masks[i].width;
for y:= t to b do
begin
for x:= l to r do
begin
c:= (x-l) + (y-t)*w;
if masks[i].mask[x+y*mw] <> 0 then
begin
result.pos[i][c]:= 1;
inc(pos);
end;
end;
end;
for c:= 0 to size-1 do
result.neg[i][c]:= 1 - result.pos[i][c];
if pos = 0 then result.neg_adj[i]:= 1 else result.neg_adj[i]:= 1 / pos;
if pos = 0 then result.pos_adj[i]:= 0 else result.pos_adj[i]:= 1 / pos;
result.map[i]:= ascii;
result.ascii[ord(ascii)].xoff:= masks[i].l;
result.ascii[ord(ascii)].yoff:= masks[i].t;
result.ascii[ord(ascii)].width:= masks[i].width;
result.ascii[ord(ascii)].height:= masks[i].height;
end;
result.inputs:= size;
result.outputs:= len;
end;
{guesses a glyph stored in glyph (which is an 1-0 image of the size specified by width and height in ocrdata}
function GuessGlyph(glyph: TNormArray; ocrdata: TocrData): char;
var
i,c,inputs,outputs,val: integer;
pos_weights: array of real;
neg_weights: array of real;
max, weight: real;
begin
SetLength(pos_weights,ocrdata.outputs);
SetLength(neg_weights,ocrdata.outputs);
inputs:= ocrdata.inputs - 1;
outputs:= ocrdata.outputs - 1;
for i:= 0 to inputs do
begin
val:= glyph[i];
for c:= 0 to outputs do
begin
pos_weights[c]:= pos_weights[c] + ocrdata.pos[c][i] * val;
neg_weights[c]:= neg_weights[c] + ocrdata.neg[c][i] * val;
end
end;
max:= 0;
for i:= 0 to outputs do
begin
weight:= pos_weights[i] * ocrdata.pos_adj[i] - neg_weights[i] * ocrdata.neg_adj[i];
if (weight > max) then
begin
max:= weight;
result:= ocrdata.map[i];
end;
end;
end;
{converts a TPA into a 1-0 image of the smallest possible size}
function PointsToNorm(points: TpointArray; var w,h: integer): TNormArray;
var
l,r,t,b: integer;
i,len,size: integer;
norm: TNormArray;
begin
len:= length(points);
l:= points[0].x;
r:= points[0].x;
t:= points[0].y;
b:= points[0].y;
for i:= 1 to len-1 do
begin
if points[i].x < l then l:= points[i].x;
if points[i].x > r then r:= points[i].x;
if points[i].y < t then t:= points[i].y;
if points[i].y > b then b:= points[i].y;
end;
w:= r - l + 1;
h:= b - t + 1;
size:= w * h;
SetLength(norm,size);
for i:= 0 to len-1 do
norm[(points[i].x - l) + (points[i].y - t) * w]:= 1;
result:= norm;
end;
function ImageToNorm(src: tRGBArray; w,h: integer): TNormArray;
var
norm: TNormArray;
i: integer;
begin
SetLength(norm,w*h);
for i:= 0 to w*h-1 do
if (src[i].r = 255) and (src[i].g = 255) and (src[i].b = 255) then
norm[i]:= 1 else norm[i]:= 0;
result:= norm;
end;
{takes a mask of only one line of text, a TocrData, and returns the string in it}
function ocrDetect(txt: TNormArray; w,h: integer; var ocrdata: TocrData): string;
var
l,r,t,b,x,y,xx,yy: integer;
upper,left,last,spaces: integer;
glyph: TNormArray;
empty: boolean;
ascii: char;
begin
result:= '';
l:= -1;
r:= -1;
upper:= -9001; //large negative
left:= -9001; //large negative
x:= 0;
while x < w do
begin
empty:= true;
for y:= 0 to h-1 do
begin
if txt[x+y*w] = 1 then
begin
empty:= false;
break;
end;
end;
if (l = -1) and (not empty) then
begin
l:= x
end else if (l <> -1) then
begin
if empty then
r:= x - 1
else if x = w-1 then
r:= x;
end;
if (r <> -1) and (l <> -1) then
begin
t:= -1;
b:= -1;
SetLength(glyph,0);
SetLength(glyph,ocrdata.width*ocrdata.height);
for yy:= 0 to h-1 do
begin
for xx:= l to r do
if txt[xx+yy*w] = 1 then begin t:= yy; break; end;
if t <> -1 then break;
end;
for yy:= h-1 downto 0 do
begin
for xx:= l to r do
if txt[xx+yy*w] = 1 then begin b:= yy; break; end;
if b <> -1 then break;
end;
if b - t + 1 > ocrdata.height then b:= b - (b-t+1-ocrdata.height);
if r - l + 1 > ocrdata.width then r:= r - (r-l+1-ocrdata.width);
for yy:= t to b do
for xx:= l to r do
glyph[(xx-l) + (yy-t)*ocrdata.width]:= txt[xx+yy*w];
ascii:= GuessGlyph(glyph,ocrdata);
if (upper = -9001) or (left = -9001) then
begin
upper:= t - ocrdata.ascii[ord(ascii)].yoff;
left:= l - ocrdata.ascii[ord(ascii)].xoff + ocrdata.ascii[ord(ascii)].width;
x:= left;
end else
begin
last:= left;
left:= l - ocrdata.ascii[ord(ascii)].xoff;
if last <> left then
begin
for spaces:= 1 to (left - last) div ocrdata.ascii[32].width do
result:= result + ' ';
end;
left:= left + ocrdata.ascii[ord(ascii)].width;
x:= left;
end;
result:= result + ascii;
l:= -1;
r:= -1;
end;
inc(x);
end;
end;
function AvgColors(color1:tRGB; weight1: integer; color2: tRGB; weight2: integer): tRGB;
begin
result.r:= (color1.r * weight1 + color2.r * weight2) div (weight1 + weight2);
result.g:= (color1.g * weight1 + color2.g * weight2) div (weight1 + weight2);
result.b:= (color1.b * weight1 + color2.b * weight2) div (weight1 + weight2);
end;
procedure RGBtoXYZ(color: tRGB; var X, Y, Z: real); inline;
var
nr,ng,nb: real;
begin
nr:= color.r / 255.0;
ng:= color.g / 255.0;
nb:= color.b / 255.0;
if nr <= 0.04045 then nr:= nr / 12.92 else nr:= power((nr + 0.055)/1.055,2.4);
if ng <= 0.04045 then ng:= ng / 12.92 else ng:= power((ng + 0.055)/1.055,2.4);
if nb <= 0.04045 then nr:= nb / 12.92 else nb:= power((nb + 0.055)/1.055,2.4);
X:= 0.4124*nr + 0.3576*ng + 0.1805*nb;
Y:= 0.2126*nr + 0.7152*ng + 0.0722*nb;
Z:= 0.0193*nr + 0.1192*ng + 0.9505*nb;
end;
function labmod(i: real): real; inline;
begin
if i > power(0.206896552,3) then
result:= power(i,0.333333333)
else
result:= 7.787037037*i + 0.137931034;
end;
function ColortoLab(c: tRGB): tLab; inline;
var
X,Y,Z,sum,Xn,Yn,Zn: real;
begin
RGBtoXYZ(c,X,Y,Z);
sum:= X + Y + Z;
Xn:= X / sum;
Yn:= Y / sum;
Zn:= Z / sum;
result.L:= 116.0*labmod(y/yn) - 16.0;
result.a:= 500.0*(labmod(x/xn)-labmod(y/yn));
result.b:= 500.0*(labmod(y/yn)-labmod(z/zn));
end;
function colorDistSqr(a,b:tRGB): integer; inline;
begin
result:= (a.r-b.r)*(a.r-b.r)+(a.b-b.b)*(a.b-b.b)+(a.g-b.g)*(a.g-b.g);
end;
function ExtractText(colors: PRGB32;{colors: tRGBArray;} w,h: integer): TNormArray;
const
GradientMax = 5.0;
white: tRGB = ( b: $FF; g: $FF; r: $FF; a: $00 );
cyan: tRGB = ( b: $FF; g: $FF; r: $00; a: $00 );
yellow: tRGB = ( b: $00; g: $EF; r: $FF; a: $00 );
red: tRGB = ( b: $00; g: $00; r: $FF; a: $00 );
var
up, left: boolean;
len,numblobs,thisblob,lastblob,i,j,used: integer;
blobbed,blobcount,stack: array of integer;
labs: array of tLab;
a,b: tLab;
blobcolor: tRGBArray;
newcolors: array of integer;
c: tRGB;
norm: TNormArray;
begin
len:= w*h;
SetLength(blobbed,len);
SetLength(blobcount,len);
SetLength(blobcolor,len);
SetLength(stack,len);
SetLength(labs,len);
for i:= 0 to len-1 do
labs[i]:= ColorToLab(tRGB(colors[i]));
numblobs:= 0;
for i:= 0 to len-1 do
begin
a:= labs[i];
if i >= w then
begin
b:= labs[i-w];
up:= abs(a.L-b.L)+abs(a.a-b.a)+abs(a.b-b.b) <= GradientMax;
end else
up:= false;
if i mod w <> 0 then
begin
b:= labs[i-1];
left:= abs(a.L-b.L)+abs(a.a-b.a)+abs(a.b-b.b) <= GradientMax;
end else
left:= false;
if left and up then
begin
thisblob:= blobbed[i-w];
blobbed[i]:= thisblob;
blobcolor[thisblob]:= AvgColors(blobcolor[thisblob],blobcount[thisblob],tRGB(colors[i]),1);
blobcount[thisblob]:= blobcount[thisblob] + 1;
lastblob:= blobbed[i-1];
if lastblob <> thisblob then
begin
used:= 1;
stack[0]:= i-1;
while used > 0 do
begin
used:= used - 1;
j:= stack[used];
if blobbed[j] = lastblob then
begin
blobbed[j]:= thisblob;
if j >= w then if blobbed[j-w] = lastblob then begin stack[used]:= j-w; used:= used + 1; end;
if j mod w <> 0 then if blobbed[j-1] = lastblob then begin stack[used]:= j-1; used:= used + 1; end;
if (j+1) mod w <> 0 then if blobbed[j+1] = lastblob then begin stack[used]:= j+1; used:= used + 1; end;
if j < w*h-w then if blobbed[j+w] = lastblob then begin stack[used]:= j+w; used:= used + 1; end;
end;
end;
blobcolor[thisblob]:= AvgColors(blobcolor[thisblob],blobcount[thisblob],blobcolor[lastblob],blobcount[lastblob]);
blobcount[thisblob]:= blobcount[thisblob] + blobcount[lastblob];
blobcount[lastblob]:= 0;
end;
end else if left then
begin
thisblob:= blobbed[i-1];
blobbed[i]:= thisblob;
blobcolor[thisblob]:= AvgColors(blobcolor[thisblob],blobcount[thisblob],tRGB(colors[i]),1);
blobcount[thisblob]:= blobcount[thisblob] + 1;
end else if up then
begin
thisblob:= blobbed[i-w];
blobbed[i]:= thisblob;
blobcolor[thisblob]:= AvgColors(blobcolor[thisblob],blobcount[thisblob],tRGB(colors[i]),1);
blobcount[thisblob]:= blobcount[thisblob] + 1;
end else
begin
blobbed[i]:= numblobs;
blobcount[numblobs]:= 1;
blobcolor[numblobs]:= tRGB(colors[i]);
numblobs:= numblobs + 1;
end;
end;
SetLength(blobcount,numblobs);
SetLength(blobcolor,numblobs);
//Done blobfinding, extract char masks
SetLength(newcolors,numblobs);
for i:= 0 to numblobs-1 do
begin
j:= blobcount[i];
if j > 0 then
begin
c:= blobcolor[i];
if (j > 50) or (j < 2) then
newcolors[i]:= 0
else if colorDistSqr(white,c) <= 10000 then
newcolors[i]:= 1
else if colorDistSqr(cyan,c) <= 10000 then
newcolors[i]:= 1
else if colorDistSqr(yellow,c) <= 10000 then
newcolors[i]:= 1
else if colorDistSqr(red,c) <= 10000 then
newcolors[i]:= 1
else
newcolors[i]:= 0;
end;
end;
SetLength(norm,len);
for i:= 0 to len-1 do
norm[i]:= newcolors[blobbed[i]];
result:= norm;
end;
constructor TMOCR.Create(Owner: TObject);
var
files: TStringArray;
begin
inherited Create;
Self.Client := Owner;
SetLength(OCRData, 0);
//files := GetFiles('/home/merlijn/Programs/mufasa/UpText/upchars', 'bmp');
end;
destructor TMOCR.Destroy;
begin
inherited Destroy;
SetLength(OCRData, 0);
inherited Destroy;
end;
function TMOCR.InitTOCR(path: string): boolean;
begin
{ This must be dynamic }
{ '/home/merlijn/Programs/mufasa/UpText/upchars/' }
SetLength(OCRData, 1);
OCRData[0] := InitOCR(path + '/UpChars/');
end;
function TMOCR.GetUpTextAt(atX, atY: integer): string;
var
bmp: TMufasaBitmap;
n: TNormArray;
w,h,ww,hh: integer;
begin
TClient(Client).MWindow.GetDimensions(w, h);
ww := 300;
hh := 20;
if ww > w then
ww := w;
if hh > h then
hh := h;
bmp := TMufasaBitmap.Create;
bmp.SetSize(ww - atX, hh - atY);
bmp.OnDestroy:=nil;
bmp.CopyClientToBitmap(TClient(Client).MWindow, atX, atY, ww, hh);
n := ExtractText(bmp.FData, bmp.Width, bmp.Height);
Result := ocrDetect(n, bmp.Width, bmp.Height, OCRData[0]);
bmp.Free;
end;
end.