Undefined function snapshot for input arguments of type 'uint8'?

I have a code in which I need to use mobile as ipweb cam to take a single image.

url='http://192.168.43.1:8080/shot.jpg';
cam = imread(url);
img= snapshot(cam);
imshow(img);
fullFileName= fullfile('C:\Users\USER\Desktop\final year project\FFF', '.jpg');
imwrite(img,fullFileName);
clear cam;

BUt I am getting an error saying undefined function 'snapshot' for input arguments of type 'uint8'. I am using matlab2014a.

Answer 1

[Jan]

Did you read the documentation already? doc snapshot. You have to create the "cam" object e.g. by cam = webcam('Logitech'). In your code, the image is obtained by imread(url) already, so simply replace:

cam = imread(url);
img= snapshot(cam);
imshow(img);

by

img = imread(url);
imshow(img);

[Manisha Jaiswal]

Thank you for the help.

[Manisha Jaiswal]

Here, I have created two pushbuttons both of which store images but in different folders. The problem which I am facing is that the first button captures the image correctly but when the second button is pressed, it shows error as:

Error using imread (line 330) Can't read URL "http://192.168.43.1:8080/pic.jpg".