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function srcImage = readImage(pathName)
%Reading BMP image
input = fopen(pathName,'r');
%start of header information
signature = fread(input, 2, 'uchar');
file_size = fread(input, 1, 'uint32');
reserved1 = fread(input, 1, 'uint16');
reserved2 = fread(input, 1, 'uint16');
loc_of_bitmap = fread(input, 1, 'uint32');
size_of_infoheader = fread(input, 1, 'uint32');
width = fread(input, 1, 'uint32');
height = fread(input, 1, 'uint32');
number_of_planes = fread(input, 1, 'uint16');
bits_per_pixel = fread(input, 1, 'uint16');
compression_method = fread(input, 1, 'uint32');
bytes_of_bitmap = fread(input, 1, 'uint32');
hori_reso = fread(input, 1, 'uint32');
vert_reso = fread(input, 1, 'uint32');
no_of_colors = fread(input, 1, 'uint32');
no_of_imp_colors = fread(input, 1, 'uint32');
%end of header information
srcImage = zeros(height, width);
% Conditions to check whether the BMP is interleaved and handling few exceptions
if (height <= 0 || width <= 0 || signature(1) ~= 'B' || signature(2) ~= 'M' || ( bits_per_pixel ==16))
disp('Error in file format');
srcImage = 0;
end
status = fseek(input,loc_of_bitmap,-1);
nI = 0;
nJ = 0;
if(bits_per_pixel == 24)
for nI=height:-1:1
for nJ=1:width
tempb = fread(input, 1,'uchar');
tempg = fread(input, 1,'uchar');
tempr = fread(input, 1,'uchar');
srcImage(nI,nJ) = uint8((tempb + 6*tempg + 3*tempr)/10);
srcImage(nI,nJ) = uint8(tempg);
end
end
else
for nI=height:-1:1
for nJ=1:width
tempg = fread(input, 1,'uchar');
srcImage(nI,nJ) = tempg;
end
end
end
fclose(input);
end
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