Keep only the last of the same sub-matxices

hello

i have the above code that Walter Roberson help me with mean2.

for i=150:x-200
  for j=150:y-800
   if mean2(Pattern_epikef==Foto2(i:i+23,j:j+75) ) >= 0.85
       %figure:imshow(Foto2(i:i+23,j:j+75));
      %fprintf('dose pono mori astheneia\n');
      figure:imshow(Foto2(i+20:i+100,j:j+800));

     end
    end
  end

The thing i do is to search in a picture and if the pattern is the same with the specified segment of the picture do something. The pattern is multiple times in the picture. (4 times).When it finds the first, cause i have the theshold to be the same by 80%) it keep getting the same segment just shifted a bit by some pixels and so on fot the 2 etc .So,how can i keep only the last part of the same segmets???? Please help Monday last day before presentation!!

Answer 1

[Walter Roberson]

for i=150:x-200
  jrun = -1;
  for j=150:y-800
    if mean2(Pattern_epikef==Foto2(i:i+23,j:j+75) ) >= 0.85
      jrun = j; 
   elseif jrun > 0
      Theseis=[i,jrun];
       %figure:imshow(Foto2(i:i+23,jrun:jrun+75));
      %fprintf('dose pono mori astheneia\n');
      figure:imshow(Foto2(i+20:i+100,jrun:jrun+800));
      jrun = -1;
    end
  end
end

[Konstantinos Kontos]

Mr Walter Roberson i have the same result as before,it doesn't keep only one of the sames.

[Konstantinos Kontos]

How can i put the for loop 10 pixels forward when the if statement is true?

[Walter Roberson]

There is a bug in the code, but it has to do with it _not_ outputting matches that occur at the end of a run of "j".

You were not specific about what the "same segment" was, so I took it to mean the same series of "j". If you are also having extra matches on "i" then more work would be needed.

By the way, the ":" after "figure" should be a semi-colon.

[Konstantinos Kontos]

The same segment was the picture that i want to extract from tha main picture and cause the threshold is 80% it finds more than one pictures there.So what you suggesting to do now?i'm trying to put the i,j that i want into arrays buts i don't know how that could help me.

[Konstantinos Kontos]

with this i put i,j in an array.Now how can i check the elements and if the pixels arent close to do what i want.

Theseis = zeros(x);

Theseis_y=zeros(y);

for i=150:x-200

for j=150:y-800

if mean2(Pattern_epikef==Foto2(i:i+23,j:j+75) ) >= 0.85

Theseis(i)=i;

Theseis_y(j)=j;

%figure:imshow(Foto2(i:i+23,j:j+75));

%fprintf('dose pono mori astheneia\n');

figure;imshow(Foto2(i+20:i+100,j:j+800));

end

end

end

[Walter Roberson]

For this purpose, what do you mean by "arent close", and "do what i want" ?

[Konstantinos Kontos]

'arent close'

when the if is true and i extract a Foto [ Foto2(i+20:i+100,j:j+800 ] ,then it will go to to next i and it will extract the

Foto too cause the 85% is true.So in the array theseis(i) when i print the results i had 447 447

448 448

449 449

964 964

965 965

1593

1594

1595

2397

2398

So i want the pixels that are not nearby. (A)

'do what i want'

i mean that when i find them just use figure;imshow(Foto2(i+20:i+100,j:j+800)); with the (A) pixels

i think is right but with a lot of fors.if you think something let me know cause i dont know if it will work this.