procedure TForm1.N3Click(Sender: TObject);
var
x,y,pos: integer;
temp: array of byte;
val: integer;
begin
backup();
progressbar1.position := 0;
setlength(temp,length(pixels)); for y := 1 to h-2 do
begin
for x := 3 to w*3-4 do
begin
pos := y*w*3+x;
val := trunc((pixels[pos]*12 - pixels[pos-w*3-3]
- pixels[pos-w*3] - pixels[pos-w*3+3] - pixels[pos-3]
- pixels[pos+3] - pixels[pos-w*3-3] - pixels[pos+w*3]
- pixels[pos+w*3+3])/4);
if val>255 then
temp[pos] := 255
else if val<0 then
temp[pos] := 0
else
temp[pos] := val;
end;
progressbar1.Position := trunc(100*y/(h-1));
end;
for y := 1 to h-2 do
for x := 3 to w*3-4 do
pixels[y*w*3+x] := temp[y*w*3+x];
progressbar1.Position := 0;
updateimage();
end;
[Error] Unit1.pas(152): Undeclared identifier: 'backup'
[Error] Unit1.pas(154): Undeclared identifier: 'pixels'
[Error] Unit1.pas(156): Undeclared identifier: 'h'
[Error] Unit1.pas(158): Undeclared identifier: 'w'
[Error] Unit1.pas(178): Undeclared identifier: 'updateimage'
var
x,y,pos: integer;
temp: array of byte;
val: integer;
begin
backup();
progressbar1.position := 0;
setlength(temp,length(pixels)); for y := 1 to h-2 do
begin
for x := 3 to w*3-4 do
begin
pos := y*w*3+x;
val := trunc((pixels[pos]*12 - pixels[pos-w*3-3]
- pixels[pos-w*3] - pixels[pos-w*3+3] - pixels[pos-3]
- pixels[pos+3] - pixels[pos-w*3-3] - pixels[pos+w*3]
- pixels[pos+w*3+3])/4);
if val>255 then
temp[pos] := 255
else if val<0 then
temp[pos] := 0
else
temp[pos] := val;
end;
progressbar1.Position := trunc(100*y/(h-1));
end;
for y := 1 to h-2 do
for x := 3 to w*3-4 do
pixels[y*w*3+x] := temp[y*w*3+x];
progressbar1.Position := 0;
updateimage();
end;
[Error] Unit1.pas(152): Undeclared identifier: 'backup'
[Error] Unit1.pas(154): Undeclared identifier: 'pixels'
[Error] Unit1.pas(156): Undeclared identifier: 'h'
[Error] Unit1.pas(158): Undeclared identifier: 'w'
[Error] Unit1.pas(178): Undeclared identifier: 'updateimage'
这两个的定义
实在难解 请高手告知~~