read JPEG-file
Synopsis
[image,head]=ejpgread(jpgFileName)
Parameter(s)
imageFileName :
name of JPEG-file e.g. ‘photo.jpg’
image :
whole JPEG-file in a vector of uchar
head :
1 x 4 vector, [sizeOfJpegFile rowsOfImage colsOfImage rgb]
rgb=1 if color image, rgb=0 if black and white image