You signed in with another tab or window. Reload to refresh your session.You signed out in another tab or window. Reload to refresh your session.You switched accounts on another tab or window. Reload to refresh your session.Dismiss alert
What steps will reproduce the problem?
1. Improve gaussianBlur() or take my improved code
2.
3.
What is the expected output? What do you see instead?
gaussianBlur() reduces image by 5 pixels in the upper left corner.
What version of the product are you using? On what operating system?
xCode and the newest version (13th july 2010)
Please provide any additional information below.
Fixed gaussianBlur() function:
ImageWrapper *Image::gaussianBlur() {
Image *result=new Image(m_width, m_height);
for(int y = 0; y < m_height; y++) {
for(int x = 0; x < m_width; x++) {
int val = (*this)[y][x]*41; //Declare currents pixels value
int middle = 41; //Declare average
if (x > 0) { val += (*this)[y][x-1] *26;middle += 26;}
if (x > 1) { val += (*this)[y][x-2] *7; middle += 7;}
if (x < m_width-1) { val += (*this)[y][x+1] *26;middle += 26;}
if (x < m_width-2) { val += (*this)[y][x+2] *7; middle += 7;}
if (y > 0) { val += (*this)[y-1][x] *26;middle += 26;}
if (y > 0 && x > 0) { val += (*this)[y-1][x-1] *16;middle += 16;}
if (y > 0 && x > 1) { val += (*this)[y-1][x-2] *4; middle += 4;}
if (y > 0 && x < m_width-1) { val += (*this)[y-1][x+1] *16;middle += 16;}
if (y > 0 && x < m_width-2) { val += (*this)[y-1][x+2] *4; middle += 4;}
if (y > 1) { val += (*this)[y-2][x] *7; middle += 7;}
if (y > 1 && x > 0) { val += (*this)[y-2][x-1] *4; middle += 4;}
if (y > 1 && x > 1) { val += (*this)[y-2][x-2] *1; middle += 1;}
if (y > 1 && x < m_width-1) { val += (*this)[y-2][x+1] *4; middle += 4;}
if (y > 1 && x < m_width-2) { val += (*this)[y-2][x+2] *1; middle += 1;}
if (y < m_height-1) { val += (*this)[y+1][x] *26;middle += 26;}
if (y < m_height-1 && x > 0) { val += (*this)[y+1][x-1] *16;middle += 16;}
if (y < m_height-1 && x > 1) { val += (*this)[y+1][x-2] *4; middle += 4;}
if (y < m_height-1 && x < m_width-1){ val += (*this)[y+1][x+1] *16;middle += 16;}
if (y < m_height-1 && x < m_width-2){ val += (*this)[y+1][x+2] *4; middle += 4;}
if (y < m_height-2) { val += (*this)[y+2][x] *7; middle += 7;}
if (y < m_height-2 && x > 0) { val += (*this)[y+2][x-1] *4; middle += 4;}
if (y < m_height-2 && x > 1) { val += (*this)[y+2][x-2] *1; middle += 1;}
if (y < m_height-2 && x < m_width-1){ val += (*this)[y+2][x+1] *4; middle += 4;}
if (y < m_height-2 && x < m_width-2){ val += (*this)[y+2][x+2] *1; middle += 1;}
(*result)[y][x] = (int)val/middle; //Calculating average value for given pixel
}
}
return [ImageWrapper imageWithCPPImage:result]; //Return the image
}
Original issue reported on code.google.com by Me.Te...@gmail.com on 13 Jul 2010 at 7:10
The text was updated successfully, but these errors were encountered:
Original issue reported on code.google.com by
Me.Te...@gmail.com
on 13 Jul 2010 at 7:10The text was updated successfully, but these errors were encountered: