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unit nii_label;
{$IFDEF FPC}
{$mode delphi}
{$ENDIF}
interface
uses
{$IFNDEF FPC}
gziod,
{$ELSE}
gzio2,
{$ENDIF}
dialogs,Classes, SysUtils, define_types;
procedure createLutLabel (var lut: TLUT; lSaturationFrac: single);
procedure LoadLabels(lFileName: string; var lLabels: TStrRA; lOffset,lLength: integer);
procedure LoadLabelsTxt(lFileName: string; var lLabels: TStrRA);
implementation
procedure LoadLabelsCore(lInStr: string; var lLabels: TStrRA);
var
lIndex,lPass,lMaxIndex,lPos,lLength: integer;
lStr1: string;
lCh: char;
begin
lLabels := nil;
lLength := length(lInStr);
lMaxIndex := -1;
for lPass := 1 to 2 do begin
lPos := 1;
if lPass = 2 then begin
if lMaxIndex < 1 then
exit;
SetLength(lLabels,lMaxIndex+1);
for lIndex := 0 to lMaxIndex do
lLabels[lIndex] := '';
end;
while lPos <= lLength do begin
lStr1 := '';
repeat
lCh := lInStr[lPos]; inc(lPos);
if (lCh >= '0') and (lCh <= '9') then
lStr1 := lStr1 + lCh;
until (lPos > lLength) or (lCh=kCR) or (lCh=UNIXeoln) or (((lCh=kTab)or (lCh=' ')) and (length(lStr1)>0));
if (length(lStr1) > 0) and (lPos <= lLength) then begin
lIndex := strtoint(lStr1);
if lPass = 1 then begin
if lIndex > lMaxIndex then
lMaxIndex := lIndex
end else if lIndex >= 0 then begin //pass 2
lStr1 := '';
repeat
lCh := lInStr[lPos]; inc(lPos);
if (lPos > lLength) or (lCh=kCR) or (lCh=UNIXeoln) {or (lCh=kTab) or (lCh=' ')} then
//
else
lStr1 := lStr1 + lCh;
until (lPos > lLength) or (lCh=kCR) or (lCh=UNIXeoln) {or (lCh=kTab)or (lCh=' ')};
lLabels[lIndex] := lStr1;
end; //if pass 2
end; //if lStr1>0
end; //while not EOF
end; //for each pass
end;
procedure LoadLabels(lFileName: string; var lLabels: TStrRA; lOffset,lLength: integer);
var
f : file; // untyped file
s : string; // string for reading a file
sz: int64;
ptr: bytep;
begin
if GzExt(lFilename) then begin
if (lLength < 1) then exit;
SetLength(s, lLength);
ptr := @s[1];
UnGZip (lFileName,ptr, lOffset,lLength);
end else begin
AssignFile(f, lFileName);
FileMode := fmOpenRead;
reset(f, 1);
if lOffset > 0 then
seek(f, lOffset);
if (lLength < 1) then
sz := FileSize(f)-lOffset
else
sz := lLength;
if (lOffset+sz) > FileSize(f) then
exit;
SetLength(s, sz);
BlockRead(f, s[1], length(s));
CloseFile(f);
FileMode := fmOpenReadWrite;
end;
LoadLabelsCore(s, lLabels);
//showmessage(lLabels[1]);
end;
procedure LoadLabelsTxt(lFileName: string; var lLabels: TStrRA);
//filename = 'all.nii' will read 'aal.txt'
var
lLUTname: string;
begin
lLabels := nil; //empty current labels
lLUTname := changefileext(lFileName,'.txt');
if not Fileexists(lLUTname) then begin
lLUTname := ParseFileName(lFileName)+'.txt'; //file.nii.gz -> file.txt
if not Fileexists(lLUTname) then
exit;
end;
LoadLabels(lLUTname, lLabels,0,-1);
end;
procedure desaturateRGBA( var lRGBA: TRGBquad; frac: single);
var
r,g,b: byte;
y: single;
begin
r := lRGBA.rgbRed;
g := lRGBA.rgbGreen;
b := lRGBA.rgbBlue;
//convert RGB->YUV http://en.wikipedia.org/wiki/YUV
y := 0.299 * r + 0.587 * g + 0.114 * b;
r := round(y * (1-frac) + r * frac);
g := round(y * (1-frac) + g * frac);
b := round(y * (1-frac) + b * frac);
lRGBA.rgbRed := r;
lRGBA.rgbGreen := g;
lRGBA.rgbBlue := b;
end;
function makeRGB(r,g,b: byte): TRGBquad;
begin
result.rgbRed := r;
result.rgbGreen := g;
result.rgbBlue := b;
result.rgbReserved := 64;
end;
procedure createLutLabel (var lut: TLUT; lSaturationFrac: single); //lLUT: 0=gray,1=red,2=green,3=blue
var
i:integer;
begin
lut[0] := makeRGB(0,0,0);
lut[0].rgbReserved:= 0;
lut[1] := makeRGB(71,46,154);
lut[2] := makeRGB(33,78,43);
lut[3] := makeRGB(192,199,10);
lut[4] := makeRGB(32,79,207);
lut[5] := makeRGB(195,89,204);
lut[6] := makeRGB(208,41,164);
lut[7] := makeRGB(173,208,231);
lut[8] := makeRGB(233,135,136);
lut[9] := makeRGB(202,20,58);
lut[10] := makeRGB(25,154,239);
lut[11] := makeRGB(210,35,30);
lut[12] := makeRGB(145,21,147);
lut[13] := makeRGB(89,43,230);
lut[14] := makeRGB(87,230,101);
lut[15] := makeRGB(245,113,111);
lut[16] := makeRGB(246,191,150);
lut[17] := makeRGB(38,147,35);
lut[18] := makeRGB(3,208,128);
lut[19] := makeRGB(25,37,57);
lut[20] := makeRGB(57,28,252);
lut[21] := makeRGB(167,27,79);
lut[22] := makeRGB(245,86,173);
lut[23] := makeRGB(86,203,120);
lut[24] := makeRGB(227,25,25);
lut[25] := makeRGB(208,209,126);
lut[26] := makeRGB(81,148,81);
lut[27] := makeRGB(64,187,85);
lut[28] := makeRGB(90,139,8);
lut[29] := makeRGB(199,111,7);
lut[30] := makeRGB(140,48,122);
lut[31] := makeRGB(48,102,237);
lut[32] := makeRGB(212,76,190);
lut[33] := makeRGB(180,110,152);
lut[34] := makeRGB(70,106,246);
lut[35] := makeRGB(120,130,182);
lut[36] := makeRGB(9,37,130);
lut[37] := makeRGB(192,160,219);
lut[38] := makeRGB(245,34,67);
lut[39] := makeRGB(177,222,76);
lut[40] := makeRGB(65,90,167);
lut[41] := makeRGB(157,165,178);
lut[42] := makeRGB(9,245,235);
lut[43] := makeRGB(193,222,250);
lut[44] := makeRGB(100,102,28);
lut[45] := makeRGB(181,47,61);
lut[46] := makeRGB(125,19,186);
lut[47] := makeRGB(145,130,250);
lut[48] := makeRGB(62,4,199);
lut[49] := makeRGB(8,232,67);
lut[50] := makeRGB(108,137,58);
lut[51] := makeRGB(36,211,50);
lut[52] := makeRGB(140,240,86);
lut[53] := makeRGB(237,11,182);
lut[54] := makeRGB(242,140,108);
lut[55] := makeRGB(248,21,77);
lut[56] := makeRGB(161,42,89);
lut[57] := makeRGB(189,22,112);
lut[58] := makeRGB(41,241,59);
lut[59] := makeRGB(114,61,125);
lut[60] := makeRGB(65,99,226);
lut[61] := makeRGB(121,115,50);
lut[62] := makeRGB(97,199,205);
lut[63] := makeRGB(50,166,227);
lut[64] := makeRGB(238,114,125);
lut[65] := makeRGB(149,190,128);
lut[66] := makeRGB(44,204,104);
lut[67] := makeRGB(214,60,27);
lut[68] := makeRGB(124,233,59);
lut[69] := makeRGB(167,66,66);
lut[70] := makeRGB(40,115,53);
lut[71] := makeRGB(167,230,133);
lut[72] := makeRGB(127,125,159);
lut[73] := makeRGB(178,103,203);
lut[74] := makeRGB(231,203,97);
lut[75] := makeRGB(30,125,125);
lut[76] := makeRGB(173,13,139);
lut[77] := makeRGB(244,176,159);
lut[78] := makeRGB(193,94,158);
lut[79] := makeRGB(203,131,7);
lut[80] := makeRGB(204,39,215);
lut[81] := makeRGB(238,198,47);
lut[82] := makeRGB(139,167,140);
lut[83] := makeRGB(135,124,226);
lut[84] := makeRGB(71,67,223);
lut[85] := makeRGB(234,175,231);
lut[86] := makeRGB(234,254,44);
lut[87] := makeRGB(217,1,110);
lut[88] := makeRGB(66,15,184);
lut[89] := makeRGB(14,198,61);
lut[90] := makeRGB(129,62,233);
lut[91] := makeRGB(19,237,47);
lut[92] := makeRGB(97,159,67);
lut[93] := makeRGB(165,31,148);
lut[94] := makeRGB(112,218,22);
lut[95] := makeRGB(244,58,120);
lut[96] := makeRGB(35,244,173);
lut[97] := makeRGB(73,47,156);
lut[98] := makeRGB(192,61,117);
lut[99] := makeRGB(12,67,181);
lut[100] := makeRGB(149,94,94);
for i := 1 to 100 do
lut[i+100] := lut[i]; //fill 101..200
for i := 1 to 55 do
lut[i+200] := lut[i]; //fill 201..255
if (lSaturationFrac < 0) or (lSaturationFrac >= 1.0) then
exit;
for i := 1 to 255 do
desaturateRGBA(lut[i], lSaturationFrac);
end;
end.
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