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main.cu
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#include <iostream>
#include <cstdio>
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
#include <cuda_runtime.h>
#include <opencv2/imgproc/imgproc.hpp>
using namespace std;
using namespace cv;
void edlbp(cv::Mat img, cv::Mat newlbpImg, int index, int i, int j);
__global__ void processImage(float3 *image, int rows, int cols)
{
int x = blockIdx.x * blockDim.x + threadIdx.x;
int y = blockIdx.y * blockDim.y + threadIdx.y;
if (x < cols && y < rows)
{
float n = 0;
float p = 0;
float center1 = image[y * cols + x].x;
float center2 = image[y * cols + x].y;
float center3 = image[y * cols + x].z;
float sumcenterx = image[(y)*cols + x + 1].x + image[(y)*cols + x - 1].x + image[(y + 1) * cols + x + 1].x + image[(y + 1) * cols + x].x + image[(y + 1) * cols + x - 1].x + image[(y - 1) * cols + x + 1].x + image[(y - 1) * cols + x].x + image[(y - 1) * cols + x - 1].x;
float sumcentery = image[(y)*cols + x + 1].y + image[(y)*cols + x - 1].y + image[(y + 1) * cols + x + 1].y + image[(y + 1) * cols + x].y + image[(y + 1) * cols + x - 1].y + image[(y - 1) * cols + x + 1].y + image[(y - 1) * cols + x].y + image[(y - 1) * cols + x - 1].y;
float sumcenterz = image[(y)*cols + x + 1].z + image[(y)*cols + x - 1].z + image[(y + 1) * cols + x + 1].z + image[(y + 1) * cols + x].z + image[(y + 1) * cols + x - 1].z + image[(y - 1) * cols + x + 1].z + image[(y - 1) * cols + x].z + image[(y - 1) * cols + x - 1].z;
center1 = (0.5) * (center1 + (0.125) * sumcenterx);
center2 = (0.5) * (center2 + (0.125) * sumcentery);
center3 = (0.5) * (center3 + (0.125) * sumcenterz);
float codex = 0.0f, codey = 0.0f, codez = 0.0f;
float Ax = 0.0f, Ay = 0.0f, Az = 0.0f;
float Cx = 0.0f, Cy = 0.0f, Cz = 0.0f;
float valuex = 0.0f, valuey = 0.0f, valuez = 0.0f;
float onex = 0.0f, oney = 0.0f, onez = 0.0f;
int index;
n = 1;
p = 2;
index = (y - 1) * cols + x - 1;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
n = 2;
p = 3;
index = (y - 1) * cols + x;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
n = 3;
p = 2;
index = (y - 1) * cols + x + 1;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
n = 4;
p = 3;
index = (y)*cols + x + 1;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
n = 5;
p = 2;
index = (y + 1) * cols + x + 1;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
n = 6;
p = 3;
index = (y + 1) * cols + x;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
n = 7;
p = 2;
index = (y + 1) * cols + x - 1;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
n = 8;
p = 3;
index = (y)*cols + x - 1;
Ax = (image[index].x - center1) / (pow(2, p) - 1 - center1);
Cx = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cx = floor(Cx);
onex = (image[index].x - center1) > 0 ? 1 : 0;
valuex = (onex)*pow(2, (n - 1) * (1 + Ax * Cx));
Ay = (image[index].y - center2) / (pow(2, p) - 1 - center2);
Cy = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cy = floor(Cy);
oney = (image[index].y - center2) > 0 ? 1 : 0;
valuey = (oney)*pow(2, (n - 1) * (1 + Ay * Cy));
Az = (image[index].z - center3) / (pow(2, p) - 1 - center3);
Cz = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
Cz = floor(Cz);
onez = (image[index].z - center3) > 0 ? 1 : 0;
valuez = (onez)*pow(2, (n - 1) * (1 + Az * Cz));
codex += valuex;
codey += valuey;
codez += valuez;
image[(y - 1) * cols + x - 1].x = codex;
image[(y - 1) * cols + x - 1].y = codey;
image[(y - 1) * cols + x - 1].z = codez;
}
}
int main(int argc, char *argv[])
{
// Read the image
Mat img = imread(argv[1], IMREAD_ANYCOLOR);
Mat fimg = Mat::zeros(img.rows, img.cols, CV_32FC3);
img.convertTo(fimg, CV_32FC3);
Mat image = Mat::zeros(img.rows, img.cols, CV_32FC3);
cv::cvtColor(fimg, image, COLOR_BGR2HSV);
// Get the image data pointer
float3 *d_image;
cudaMalloc(&d_image, image.rows * image.cols * sizeof(float3));
cudaMemcpy(d_image, image.ptr<float3>(), image.rows * image.cols * sizeof(float3), cudaMemcpyHostToDevice);
// Define block and grid dimensions
dim3 block(32, 32);
dim3 grid((image.cols + block.x - 1) / block.x, (image.rows + block.y - 1) / block.y);
cudaEvent_t start, stop;
float elapsed_time_ms;
cudaEventCreate(&start);
cudaEventCreate(&stop);
cudaEventRecord(start, 0);
// Launch the CUDA kernel
processImage<<<grid, block>>>(d_image, image.rows, image.cols);
cudaEventRecord(stop, 0);
cudaEventSynchronize(stop);
cudaEventElapsedTime(&elapsed_time_ms, start, stop);
elapsed_time_ms *= 1000;
// Copy the result back to the host
cudaMemcpy(image.ptr<float3>(), d_image, image.rows * image.cols * sizeof(float3), cudaMemcpyDeviceToHost);
// Free the allocated memory on the device
cudaFree(d_image);
// Display or save the modified image
//imwrite("m.jpg", image);
Mat newlbpImg = Mat::zeros(image.rows, image.cols, CV_32FC3);
auto start_time = std::chrono::high_resolution_clock::now();
for (int i = 1; i < newlbpImg.rows; i++)
{
for (int j = 1; j < newlbpImg.cols; j++)
{
edlbp(fimg, newlbpImg, 0, i, j);
edlbp(fimg, newlbpImg, 1, i, j);
edlbp(fimg, newlbpImg, 2, i, j);
}
}
auto end_time = std::chrono::high_resolution_clock::now();
auto total_time = std::chrono::duration_cast<std::chrono::milliseconds>(end_time - start_time);
int finalt = total_time.count();
//imwrite("m1.jpg", image);
cout << "CUDA " << elapsed_time_ms << " Seq " << finalt << " speedup " << finalt / elapsed_time_ms << endl;
return 0;
}
void edlbp(cv::Mat img, cv::Mat newlbpImg, int index, int i, int j)
{
float n = 0;
float p = 0;
p = 8;
float center = img.at<Vec3f>(i, j)[index] + 0.3f;
float sumcenter = img.at<Vec3f>(i - 1, j - 1)[index] + img.at<Vec3f>(i - 1, j)[index] + img.at<Vec3f>(i - 1, j + 1)[index] + img.at<Vec3f>(i, j + 1)[index] + img.at<Vec3f>(i + 1, j + 1)[index] + img.at<Vec3f>(i + 1, j)[index] + img.at<Vec3f>(i + 1, j - 1)[index] + img.at<Vec3f>(i, j - 1)[index];
center = (0.5) * (center + (0.125) * sumcenter);
float code = 0;
float A = 0.0f;
float C = 0.0f;
float value = 0.0f;
float one = 0.0f;
n = 1;
p = 2;
A = (img.at<Vec3f>(i - 1, j - 1)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
one = (img.at<Vec3f>(i - 1, j - 1)[index] - center) > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
n = 2;
p = 3;
A = (img.at<Vec3f>(i - 1, j)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
value = img.at<Vec3f>(i - 1, j)[index] - center;
one = value > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
n = 3;
p = 2;
A = (img.at<Vec3f>(i - 1, j + 1)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
value = img.at<Vec3f>(i - 1, j + 1)[index] - center;
one = value > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
n = 4;
p = 3;
A = (img.at<Vec3f>(i, j + 1)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
value = img.at<Vec3f>(i, j + 1)[index] - center;
one = value > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
n = 5;
p = 2;
A = (img.at<Vec3f>(i + 1, j + 1)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
value = img.at<Vec3f>(i + 1, j + 1)[index] - center;
one = value > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
n = 6;
p = 3;
A = (img.at<Vec3f>(i + 1, j)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
value = img.at<Vec3f>(i + 1, j)[index] - center;
one = value > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
n = 7;
p = 2;
A = (img.at<Vec3f>(i + 1, j - 1)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
value = img.at<Vec3f>(i + 1, j - 1)[index] - center;
one = value > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
n = 8;
p = 3;
A = (img.at<Vec3f>(i, j - 1)[index] - center) / (pow(2, p) - 1 - center);
C = ((-1 * (n - 1) * (n - p)) / (((p - 1) / 2) * ((p - 1) / 2)));
C = floor(C);
value = img.at<Vec3f>(i, j - 1)[index] - center;
one = value > 0 ? 1 : 0;
value = (one)*pow(2, (n - 1) * (1 + A * C));
code += value;
newlbpImg.at<Vec3f>(i - 1, j - 1)[index] = code;
}