I am using the Image Acquisition Toolbox, and I would like to set the ‘ReturnedColorSpace’ device property to ‘grayscale’. For example, I might use the following code:
vid = videoinput('winvideo'); set(vid, 'ReturnedColorSpace', 'grayscale'); start(vid) data = getdata(vid); delete(vid)
However, MATLAB issues a segmentation violation, requiring me to restart. For example, I may receive a segmentation violation such as:
------------------------------------------------------------------------ Assertion detected at Fri Nov 19 14:02:43 2004 ------------------------------------------------------------------------ Assertion failed: hdr->in_use != 0, at line 736 of file ".\memmgr\memcache.cpp". Attempt to free previously freed memory Stack Trace: [0] bridge.dll:_mnSignalHandler(0xffffffff, 0, 0, 0x79c99b80) + 303 bytes [1] bridge.dll:void __cdecl ThrowAssertion(void)(0x0337c3b8, 0x78775b98, 0x65737341, 0x6f697472) + 164 bytes [2] bridge.dll:void __cdecl MATLABAssertFcn(char const *,char const *,int,char const *)(0x7874d4ec ": hdr->in_use != 0,", 0x7874d328 ".\memmgr\memcache.cpp", 736, 0x7874c590 "Attempt to free previously freed..") + 110 bytes [3] libut.dll:_mw_free(0x0337c3c0 "?ioSetPutsFcn@@YAXP6AHPBDPAU_iob..", 0x00cde9bc "ÔéÍ", 0x78792a08, 0x0337c3c0 "?ioSetPutsFcn@@YAXP6AHPBDPAU_iob..") + 584 bytes [4] libut.dll:_utFree(0x0337c3c0 "?ioSetPutsFcn@@YAXP6AHPBDPAU_iob..", 0x0337c3c0 "?ioSetPutsFcn@@YAXP6AHPBDPAU_iob..", 0x2033dcc4, 0x00cde9d4 "äéÍ") + 100 bytes
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