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45 cvDeInterlace( const CvArr* framearr, CvArr* fieldEven, CvArr* fieldOdd )
47 CV_FUNCNAME("cvDeInterlace");
51 CvMat frame_stub, *frame = (CvMat*)framearr;
52 CvMat even_stub, *even = (CvMat*)fieldEven;
53 CvMat odd_stub, *odd = (CvMat*)fieldOdd;
57 CV_CALL( frame = cvGetMat( frame, &frame_stub ));
58 CV_CALL( even = cvGetMat( even, &even_stub ));
59 CV_CALL( odd = cvGetMat( odd, &odd_stub ));
61 if( !CV_ARE_TYPES_EQ( frame, even ) || !CV_ARE_TYPES_EQ( frame, odd ))
62 CV_ERROR( CV_StsUnmatchedFormats, "All the input images must have the same type" );
64 if( frame->cols != even->cols || frame->cols != odd->cols ||
65 frame->rows != even->rows*2 || odd->rows != even->rows )
66 CV_ERROR( CV_StsUnmatchedSizes, "Uncorrelated sizes of the input image and output fields" );
68 size = cvGetMatSize( even );
69 size.width *= CV_ELEM_SIZE( even->type );
71 for( y = 0; y < size.height; y++ )
73 memcpy( even->data.ptr + even->step*y,
74 frame->data.ptr + frame->step*y*2, size.width );
75 memcpy( odd->data.ptr + even->step*y,
76 frame->data.ptr + frame->step*(y*2+1), size.width );