:) 1)I just copy the tutorial to run "print pix[44,55]". I really dont know why they wrote that?!
2) i think putpixel((44, 55), (0, 0, 0)) and putpixel((44,55),0) is same. thank you again. I think I have solved my problem. Steve Holden wrote: > Lucas wrote: > > Thank you for your answer. > > > > I have some new questions: > > > > 1) the value of return from getpixel() is a RGB number? > > print im.getpixel((44,55)) ----> (160,160,160) > > > Yes, that's an RGB tuple. > > > 2) I want to put a number into the picture for encryption(replace least > > significant bit (LSB) of image intensity with message bit). > > > > If i use putpixel((44,55),0) , the number 0 will be changed RGB > > value or others.? > > > I think you'd need to use > > putpixel((44, 55), (0, 0, 0)) > > but it's easy enough to try out interactively ... > > > 3) pix = im.load() > > print pix[44,55] > > pix[44, 55] = value > > my python cannt identify "[x,y]" ?? > > > > Now what makes you think that an image can be addressed that way? I'd be > quite surprised if yo got anything other than a TypeError doing that. > > regards > Steve > -- > Steve Holden +44 150 684 7255 +1 800 494 3119 > Holden Web LLC/Ltd http://www.holdenweb.com > Skype: holdenweb http://holdenweb.blogspot.com > Recent Ramblings http://del.icio.us/steve.holden -- http://mail.python.org/mailman/listinfo/python-list
