ippiFilterPrewittHorizBorder_32f_C1R

Kim9 — Mon, 18 Nov 2024 10:47:08 GMT

Need to use,

ippiFilterPrewittHorizBorder_32f_C1R,

tried it one of sample program, but it always gives One or more input pointers are NULL error.

Validated src & dst images & roi as well.

int main() { // Define image dimensions const int width = 512; const int height = 512; // Allocate memory for source and destination images Ipp32f* psrc=new (std::nothrow) Ipp32f[width * height]; // Source image (grayscale) Ipp32f* pDst = new (std::nothrow) Ipp32f[width * height]; // Destination image (filtered) // Check for memory allocation success if (psrc== nullptr) { std::cerr << "Memory allocation for source image failed!" << std::endl; return -1; } if (pDst == nullptr) { std::cerr << "Memory allocation for destination image failed!" << std::endl; delete[] pSrc; // Clean up previously allocated memory return -1; } // Initialize source image with some data (example: simple gradient) for (int i = 0; i < height; ++i) { for (int j = 0; j < width; ++j) { pSrc[i * width + j] = static_cast<Ipp32f>((j + i) % 256); // Simple data initialization } } // Define region of interest IppiSize roiSize = {width, height}; // Full image int srcStep = width * sizeof(Ipp32f); // Step size in bytes for source image int dstStep = width * sizeof(Ipp32f); // Step size in bytes for destination image // Check ROI dimensions and step sizes std::cout << "ROI Size: " << roiSize.width << "x" << roiSize.height << std::endl; std::cout << "Source Step: " << srcStep << ", Destination Step: " << dstStep << std::endl; // Apply the Prewitt horizontal filter IppStatus status = ippiFilterPrewittHorizBorder_32f_C1R( pSrc, // Source pointer srcStep, // Source step pDst, // Destination pointer dstStep, // Destination step roiSize, // ROI size ippMskSize3x3, ippBorderConst, // Border type 0.0f, // Constant border value nullptr ); // Check for errors if (status != ippStsNoErr) { std::cerr << "Error applying Prewitt horizontal filter: " << status << std::endl; // Output additional debugging information switch (status) { case ippStsNullPtrErr: std::cerr << "One or more input pointers are NULL." << std::endl; break; case ippStsSizeErr: std::cerr << "ROI size is incorrect." << std::endl; break; case ippStsStepErr: std::cerr << "Step size is incorrect." << std::endl; break; default: std::cerr << "An unexpected error occurred." << std::endl; } } else { std::cout << "Prewitt horizontal filter applied successfully!" << std::endl; } // Clean up delete[] pSrc; delete[] pDst; return 0; }

Re: ippiFilterPrewittHorizBorder_32f_C1R

Chao_Y_Intel — Wed, 27 Nov 2024 13:52:55 GMT

Hi,

have you got chance to check our sample at here?

FilterPrewittHorizBorder

Before using this function, y, it need to allocate a buffer, it needs to use FilterPrewittHorizBorderGetBufferSize to get the buffer size, and then use provide the buffer for this function. In the code before, only a NULL pointer is provided.

thanks,
Chao

topic ippiFilterPrewittHorizBorder_32f_C1R in Intel® Integrated Performance Primitives

ippiFilterPrewittHorizBorder_32f_C1R

Re: ippiFilterPrewittHorizBorder_32f_C1R