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Hi , I am new to matlab programming, may be this question might be very funda, but i want to know, I created image of size 50x50 but it says "index is outof size in" "if (double(im(x1,y1)) ==1)" can anyone clarify me how this line acts or what it does also can anyone suggest me good books on Matlab working.. srini s > ---------- > From: [SMTP:] > Sent: Thursday, April 12, 2001 11:39 AM > To: > Subject: [matlab] Re Image Processing > here is the source code (matlab) and you just change the path and > specify the image ( i have made this code for the image which is > binary image and is black solid object on it its size is 50*50, and i > have assumed its center at 25*25 of the image, but you can aldo find > the center of any image using moment...) > Source code for this operation is listed below: > This module finds points on the boundary of the object > > function output =findPoints(im) > [r c] = size(im); > > ctrx%; > ctry%; > > index = 1; > for theta = 0:.1:(2*pi) > for r=0:1:100 > x = r*cos(theta); > y = r*sin(theta); > > x1=fix(ctrx+x); > y1=fix(ctry+y); > > if (double(im(x1,y1)) ==1) > output(1,index) = x1; > output(2,index) = y1; > index = index + 1; > break; > end > end > end > > Main module which performs the above task > img = imread('c:\polygone.bmp'); > imshow(im); > > cords=findPoints(im); > > for i=1:length(cords)-1 > line([cords(2,i),cords(2,i+1)],[cords(1,i),cords(1,i+1)]); > end > > _____________________________________ > Note: If you do a simple "reply" with your email client, only the author > of this message will receive your answer. You need to do a "reply all" if > you want your answer to be distributed to the entire group. > > _____________________________________ > About this discussion group: > > To Join: > > To Post: > > To Leave: > > Archives: http://www.yahoogroups.com/group/matlab > > More DSP-Related Groups: http://www.dsprelated.com/groups.php3 > > ">http://docs.yahoo.com/info/terms/ |
RE: Re Image Processing
Started by ●April 17, 2001
