cudafunc.cu
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#include "cuda_fp16.h"
#include "float_to_half.cuh"
#include "half_to_float.cuh"
#include "gaussian_blur3.cuh"
#include "gradient3.cuh"
#include "mag3.cuh"
#include "vote3.cuh"
#include "update_dir3.cuh"
#include "local_max3.cuh"
void ivote3(float* center, float* img, float sigma[], float phi, float d_phi, unsigned int r[],
int iter, float t, unsigned int conn[], unsigned int x, unsigned int y, unsigned int z){
// compute the number of bytes in the input data
unsigned int bytes = x * y * z * sizeof(float);
//assign memory on gpu for the input data.
float* gpuI0;
cudaMalloc(&gpuI0, bytes);
//copy the image data to the GPU.
cudaMemcpy(gpuI0, img, bytes, cudaMemcpyHostToDevice);
//call the blurring function from the gpu.
gpu_gaussian_blur3<float>(gpuI0, sigma, x, y, z);
cudaDeviceSynchronize();
//assign memory on the gpu for the gradient along the X, y, z.
float* gpu_grad;
cudaMalloc(&gpu_grad, bytes*3);
//call the gradient function from the gpu.
gpu_gradient3<float>(gpu_grad, gpuI0, x, y, z);
cudaFree(gpuI0);
float* gpu_vote;
cudaMalloc(&gpu_vote, bytes);
float cos_phi = cos(phi);
//call the vote function.
for (int i = 0; i < iter; i++){
gpu_vote3<float>(gpu_vote, gpu_grad, cos_phi, r, x, y, z);
cudaDeviceSynchronize();
if (i==0)
cudaMemcpy(img, gpu_vote, bytes, cudaMemcpyDeviceToHost);
if (phi >= d_phi){
gpu_update_dir3<float>(gpu_grad, gpu_vote, cos_phi, r, x, y, z);
cudaDeviceSynchronize();
phi = phi - d_phi;
cos_phi = cos(phi);
}
}
cudaFree(gpu_grad);
cudaMemcpy(center, gpu_vote, bytes, cudaMemcpyDeviceToHost);
//allocate space on the gpu for the final detected cells.
float* gpu_output;
cudaMalloc(&gpu_output, bytes);
//call the local max function
gpu_local_max3<float>(gpu_output, gpu_vote, t, conn, x, y, z);
//copy the final result to the cpu.
//cudaMemcpy(center, gpu_output, bytes, cudaMemcpyDeviceToHost);
cudaFree(gpu_vote);
cudaFree(gpu_output);
}