raspberry pi 4 model b & usb logitech camera connection

hi im trying to run this file "Run on Hardware" , https://kr.mathworks.com/matlabcentral/fileexchange/62243-run-on-hardware?s_tid=srchtitle

but when i trying to run edge detection func, but i can't solve

r = raspi

<< cam = cameraboard(r) >> this part

so i trying to use func webcam,

and i made this but i can't go foward

how can i solve this problem

Answer 1

[Angelo Yeo]

Looks like there was a problem with the Raspberry Pi's CSI camera (also known as strip based camera or PiCamera) connected to the Raspberry Pi. Note that "cameraboard" function is meant to be used for the CSI camera and not for USB cameras. However, "webcam" function can be used for either Pi Camera or USB webcams.

Try replacing cameraboard function in their script with the below:

cam = webcam(r,2); % 2 refers to the second AvailableWebCams

Answer 2

[Walter Roberson]

Is there a reason you are using the File Exchange submission instead of using the MATLAB Support Package for Raspberry Pi Hardware ? Are you using a version before R2018b ?

You are using cameraboard which is part of the support package just mentioned, so I do not understand what you are doing. You should perhaps be using webcam .