385 lines
12 KiB
C++
385 lines
12 KiB
C++
#include <iostream>
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#include <stdexcept>
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//OpenVX includes
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#include <VX/vx.h>
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//OpenCV includes
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#include "opencv2/core.hpp"
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#include "opencv2/imgproc.hpp"
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#include "opencv2/imgcodecs.hpp"
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#include "opencv2/highgui.hpp"
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#ifndef VX_VERSION_1_1
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const vx_enum VX_IMAGE_FORMAT = VX_IMAGE_ATTRIBUTE_FORMAT;
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const vx_enum VX_IMAGE_WIDTH = VX_IMAGE_ATTRIBUTE_WIDTH;
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const vx_enum VX_IMAGE_HEIGHT = VX_IMAGE_ATTRIBUTE_HEIGHT;
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const vx_enum VX_MEMORY_TYPE_HOST = VX_IMPORT_TYPE_HOST;
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const vx_enum VX_MEMORY_TYPE_NONE = VX_IMPORT_TYPE_NONE;
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const vx_enum VX_THRESHOLD_THRESHOLD_VALUE = VX_THRESHOLD_ATTRIBUTE_THRESHOLD_VALUE;
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const vx_enum VX_THRESHOLD_THRESHOLD_LOWER = VX_THRESHOLD_ATTRIBUTE_THRESHOLD_LOWER;
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const vx_enum VX_THRESHOLD_THRESHOLD_UPPER = VX_THRESHOLD_ATTRIBUTE_THRESHOLD_UPPER;
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typedef uintptr_t vx_map_id;
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#endif
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enum UserMemoryMode
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{
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COPY, USER_MEM
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};
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vx_image convertCvMatToVxImage(vx_context context, cv::Mat image, bool toCopy);
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cv::Mat copyVxImageToCvMat(vx_image ovxImage);
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void swapVxImage(vx_image ovxImage);
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vx_status createProcessingGraph(vx_image inputImage, vx_image outputImage, vx_graph& graph);
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int ovxDemo(std::string inputPath, UserMemoryMode mode);
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vx_image convertCvMatToVxImage(vx_context context, cv::Mat image, bool toCopy)
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{
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if (!(!image.empty() && image.dims <= 2 && image.channels() == 1))
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throw std::runtime_error("Invalid format");
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vx_uint32 width = image.cols;
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vx_uint32 height = image.rows;
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vx_df_image color;
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switch (image.depth())
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{
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case CV_8U:
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color = VX_DF_IMAGE_U8;
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break;
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case CV_16U:
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color = VX_DF_IMAGE_U16;
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break;
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case CV_16S:
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color = VX_DF_IMAGE_S16;
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break;
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case CV_32S:
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color = VX_DF_IMAGE_S32;
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break;
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default:
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throw std::runtime_error("Invalid format");
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break;
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}
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vx_imagepatch_addressing_t addr;
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addr.dim_x = width;
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addr.dim_y = height;
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addr.stride_x = (vx_uint32)image.elemSize();
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addr.stride_y = (vx_uint32)image.step.p[0];
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vx_uint8* ovxData = image.data;
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vx_image ovxImage;
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if (toCopy)
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{
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ovxImage = vxCreateImage(context, width, height, color);
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if (vxGetStatus((vx_reference)ovxImage) != VX_SUCCESS)
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throw std::runtime_error("Failed to create image");
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vx_rectangle_t rect;
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vx_status status = vxGetValidRegionImage(ovxImage, &rect);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to get valid region");
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#ifdef VX_VERSION_1_1
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status = vxCopyImagePatch(ovxImage, &rect, 0, &addr, ovxData, VX_WRITE_ONLY, VX_MEMORY_TYPE_HOST);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to copy image patch");
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#else
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status = vxAccessImagePatch(ovxImage, &rect, 0, &addr, (void**)&ovxData, VX_WRITE_ONLY);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to access image patch");
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status = vxCommitImagePatch(ovxImage, &rect, 0, &addr, ovxData);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to commit image patch");
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#endif
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}
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else
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{
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ovxImage = vxCreateImageFromHandle(context, color, &addr, (void**)&ovxData, VX_MEMORY_TYPE_HOST);
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if (vxGetStatus((vx_reference)ovxImage) != VX_SUCCESS)
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throw std::runtime_error("Failed to create image from handle");
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}
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return ovxImage;
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}
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cv::Mat copyVxImageToCvMat(vx_image ovxImage)
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{
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vx_status status;
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vx_df_image df_image = 0;
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vx_uint32 width, height;
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status = vxQueryImage(ovxImage, VX_IMAGE_FORMAT, &df_image, sizeof(vx_df_image));
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to query image");
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status = vxQueryImage(ovxImage, VX_IMAGE_WIDTH, &width, sizeof(vx_uint32));
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to query image");
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status = vxQueryImage(ovxImage, VX_IMAGE_HEIGHT, &height, sizeof(vx_uint32));
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to query image");
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if (!(width > 0 && height > 0)) throw std::runtime_error("Invalid format");
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int depth;
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switch (df_image)
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{
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case VX_DF_IMAGE_U8:
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depth = CV_8U;
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break;
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case VX_DF_IMAGE_U16:
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depth = CV_16U;
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break;
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case VX_DF_IMAGE_S16:
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depth = CV_16S;
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break;
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case VX_DF_IMAGE_S32:
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depth = CV_32S;
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break;
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default:
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throw std::runtime_error("Invalid format");
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break;
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}
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cv::Mat image(height, width, CV_MAKE_TYPE(depth, 1));
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vx_rectangle_t rect;
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rect.start_x = rect.start_y = 0;
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rect.end_x = width; rect.end_y = height;
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vx_imagepatch_addressing_t addr;
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addr.dim_x = width;
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addr.dim_y = height;
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addr.stride_x = (vx_uint32)image.elemSize();
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addr.stride_y = (vx_uint32)image.step.p[0];
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vx_uint8* matData = image.data;
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#ifdef VX_VERSION_1_1
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status = vxCopyImagePatch(ovxImage, &rect, 0, &addr, matData, VX_READ_ONLY, VX_MEMORY_TYPE_HOST);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to copy image patch");
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#else
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status = vxAccessImagePatch(ovxImage, &rect, 0, &addr, (void**)&matData, VX_READ_ONLY);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to access image patch");
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status = vxCommitImagePatch(ovxImage, &rect, 0, &addr, matData);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to commit image patch");
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#endif
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return image;
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}
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void swapVxImage(vx_image ovxImage)
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{
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#ifdef VX_VERSION_1_1
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vx_status status;
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vx_memory_type_e memType;
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status = vxQueryImage(ovxImage, VX_IMAGE_MEMORY_TYPE, &memType, sizeof(vx_memory_type_e));
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to query image");
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if (memType == VX_MEMORY_TYPE_NONE)
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{
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//was created by copying user data
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throw std::runtime_error("Image wasn't created from user handle");
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}
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else
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{
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//was created from user handle
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status = vxSwapImageHandle(ovxImage, NULL, NULL, 0);
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if (status != VX_SUCCESS)
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throw std::runtime_error("Failed to swap image handle");
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}
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#else
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//not supported until OpenVX 1.1
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(void) ovxImage;
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#endif
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}
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vx_status createProcessingGraph(vx_image inputImage, vx_image outputImage, vx_graph& graph)
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{
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vx_status status;
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vx_context context = vxGetContext((vx_reference)inputImage);
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status = vxGetStatus((vx_reference)context);
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if(status != VX_SUCCESS) return status;
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graph = vxCreateGraph(context);
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status = vxGetStatus((vx_reference)graph);
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if (status != VX_SUCCESS) return status;
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vx_uint32 width, height;
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status = vxQueryImage(inputImage, VX_IMAGE_WIDTH, &width, sizeof(vx_uint32));
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if (status != VX_SUCCESS) return status;
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status = vxQueryImage(inputImage, VX_IMAGE_HEIGHT, &height, sizeof(vx_uint32));
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if (status != VX_SUCCESS) return status;
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// Intermediate images
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vx_image
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smoothed = vxCreateVirtualImage(graph, 0, 0, VX_DF_IMAGE_VIRT),
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cannied = vxCreateVirtualImage(graph, 0, 0, VX_DF_IMAGE_VIRT),
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halfImg = vxCreateImage(context, width, height, VX_DF_IMAGE_U8),
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halfCanny = vxCreateImage(context, width, height, VX_DF_IMAGE_U8);
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vx_image virtualImages[] = {smoothed, cannied, halfImg, halfCanny};
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for(size_t i = 0; i < sizeof(virtualImages)/sizeof(vx_image); i++)
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{
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status = vxGetStatus((vx_reference)virtualImages[i]);
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if (status != VX_SUCCESS) return status;
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}
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// Constants
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vx_uint32 threshValue = 50;
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vx_threshold thresh = vxCreateThreshold(context, VX_THRESHOLD_TYPE_BINARY, VX_TYPE_UINT8);
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vxSetThresholdAttribute(thresh, VX_THRESHOLD_THRESHOLD_VALUE,
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&threshValue, sizeof(threshValue));
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vx_uint32 threshCannyMin = 127;
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vx_uint32 threshCannyMax = 192;
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vx_threshold threshCanny = vxCreateThreshold(context, VX_THRESHOLD_TYPE_RANGE, VX_TYPE_UINT8);
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vxSetThresholdAttribute(threshCanny, VX_THRESHOLD_THRESHOLD_LOWER, &threshCannyMin,
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sizeof(threshCannyMin));
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vxSetThresholdAttribute(threshCanny, VX_THRESHOLD_THRESHOLD_UPPER, &threshCannyMax,
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sizeof(threshCannyMax));
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vx_float32 alphaValue = 0.5;
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vx_scalar alpha = vxCreateScalar(context, VX_TYPE_FLOAT32, &alphaValue);
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// Sequence of meaningless image operations
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vx_node nodes[] = {
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vxGaussian3x3Node(graph, inputImage, smoothed),
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vxCannyEdgeDetectorNode(graph, smoothed, threshCanny, 3, VX_NORM_L2, cannied),
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vxAccumulateWeightedImageNode(graph, inputImage, alpha, halfImg),
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vxAccumulateWeightedImageNode(graph, cannied, alpha, halfCanny),
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vxAddNode(graph, halfImg, halfCanny, VX_CONVERT_POLICY_SATURATE, outputImage)
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};
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for (size_t i = 0; i < sizeof(nodes) / sizeof(vx_node); i++)
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{
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status = vxGetStatus((vx_reference)nodes[i]);
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if (status != VX_SUCCESS) return status;
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}
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status = vxVerifyGraph(graph);
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return status;
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}
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int ovxDemo(std::string inputPath, UserMemoryMode mode)
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{
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cv::Mat image = cv::imread(inputPath, cv::IMREAD_GRAYSCALE);
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if (image.empty()) return -1;
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//check image format
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if (image.depth() != CV_8U || image.channels() != 1) return -1;
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vx_status status;
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vx_context context = vxCreateContext();
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status = vxGetStatus((vx_reference)context);
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if (status != VX_SUCCESS) return status;
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//put user data from cv::Mat to vx_image
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vx_image ovxImage;
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ovxImage = convertCvMatToVxImage(context, image, mode == COPY);
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vx_uint32 width = image.cols, height = image.rows;
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vx_image ovxResult;
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cv::Mat output;
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if (mode == COPY)
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{
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//we will copy data from vx_image to cv::Mat
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ovxResult = vxCreateImage(context, width, height, VX_DF_IMAGE_U8);
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if (vxGetStatus((vx_reference)ovxResult) != VX_SUCCESS)
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throw std::runtime_error("Failed to create image");
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}
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else
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{
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//create vx_image based on user data, no copying required
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output = cv::Mat(height, width, CV_8U, cv::Scalar(0));
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ovxResult = convertCvMatToVxImage(context, output, false);
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}
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vx_graph graph;
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status = createProcessingGraph(ovxImage, ovxResult, graph);
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if (status != VX_SUCCESS) return status;
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// Graph execution
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status = vxProcessGraph(graph);
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if (status != VX_SUCCESS) return status;
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//getting resulting image in cv::Mat
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if (mode == COPY)
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{
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output = copyVxImageToCvMat(ovxResult);
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}
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else
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{
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//we should take user memory back from vx_image before using it (even before reading)
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swapVxImage(ovxResult);
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}
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//here output goes
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cv::imshow("processing result", output);
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cv::waitKey(0);
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//we need to take user memory back before releasing the image
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if (mode == USER_MEM)
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swapVxImage(ovxImage);
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cv::destroyAllWindows();
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status = vxReleaseContext(&context);
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return status;
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}
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int main(int argc, char *argv[])
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{
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const std::string keys =
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"{help h usage ? | | }"
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"{image | <none> | image to be processed}"
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"{mode | copy | user memory interaction mode: \n"
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"copy: create VX images and copy data to/from them\n"
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"user_mem: use handles to user-allocated memory}"
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;
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cv::CommandLineParser parser(argc, argv, keys);
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parser.about("OpenVX interoperability sample demonstrating standard OpenVX API."
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"The application loads an image, processes it with OpenVX graph and outputs result in a window");
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if (parser.has("help"))
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{
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parser.printMessage();
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return 0;
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}
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std::string imgPath = parser.get<std::string>("image");
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std::string modeString = parser.get<std::string>("mode");
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UserMemoryMode mode;
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if(modeString == "copy")
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{
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mode = COPY;
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}
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else if(modeString == "user_mem")
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{
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mode = USER_MEM;
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}
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else if(modeString == "map")
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{
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std::cerr << modeString << " is not implemented in this sample" << std::endl;
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return -1;
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}
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else
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{
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std::cerr << modeString << ": unknown memory mode" << std::endl;
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return -1;
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}
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if (!parser.check())
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{
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parser.printErrors();
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return -1;
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}
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return ovxDemo(imgPath, mode);
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}
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