| | |
| | | #include "cuda_runtime.h" |
| | | #include "curand.h" |
| | | #include "cublas_v2.h" |
| | | |
| | | extern "C" { |
| | | #include "crop_layer.h" |
| | | #include "utils.h" |
| | |
| | | #include "image.h" |
| | | } |
| | | |
| | | #define BLOCK 256 |
| | | |
| | | __device__ float get_pixel_kernel(float *image, int w, int h, int x, int y, int c) |
| | | { |
| | | if(x < 0 || x >= w || y < 0 || y >= h) return 0; |
| | | return image[x + w*(y + c*h)]; |
| | | } |
| | | |
| | | __device__ float billinear_interpolate_kernel(float *image, int w, int h, float x, float y, int c) |
| | | __device__ float3 rgb_to_hsv_kernel(float3 rgb) |
| | | { |
| | | float r = rgb.x; |
| | | float g = rgb.y; |
| | | float b = rgb.z; |
| | | |
| | | float h, s, v; |
| | | float max = (r > g) ? ( (r > b) ? r : b) : ( (g > b) ? g : b); |
| | | float min = (r < g) ? ( (r < b) ? r : b) : ( (g < b) ? g : b); |
| | | float delta = max - min; |
| | | v = max; |
| | | if(max == 0){ |
| | | s = 0; |
| | | h = -1; |
| | | }else{ |
| | | s = delta/max; |
| | | if(r == max){ |
| | | h = (g - b) / delta; |
| | | } else if (g == max) { |
| | | h = 2 + (b - r) / delta; |
| | | } else { |
| | | h = 4 + (r - g) / delta; |
| | | } |
| | | if (h < 0) h += 6; |
| | | } |
| | | return make_float3(h, s, v); |
| | | } |
| | | |
| | | __device__ float3 hsv_to_rgb_kernel(float3 hsv) |
| | | { |
| | | float h = hsv.x; |
| | | float s = hsv.y; |
| | | float v = hsv.z; |
| | | |
| | | float r, g, b; |
| | | float f, p, q, t; |
| | | |
| | | if (s == 0) { |
| | | r = g = b = v; |
| | | } else { |
| | | int index = (int) floorf(h); |
| | | f = h - index; |
| | | p = v*(1-s); |
| | | q = v*(1-s*f); |
| | | t = v*(1-s*(1-f)); |
| | | if(index == 0){ |
| | | r = v; g = t; b = p; |
| | | } else if(index == 1){ |
| | | r = q; g = v; b = p; |
| | | } else if(index == 2){ |
| | | r = p; g = v; b = t; |
| | | } else if(index == 3){ |
| | | r = p; g = q; b = v; |
| | | } else if(index == 4){ |
| | | r = t; g = p; b = v; |
| | | } else { |
| | | r = v; g = p; b = q; |
| | | } |
| | | } |
| | | r = (r < 0) ? 0 : ((r > 1) ? 1 : r); |
| | | g = (g < 0) ? 0 : ((g > 1) ? 1 : g); |
| | | b = (b < 0) ? 0 : ((b > 1) ? 1 : b); |
| | | return make_float3(r, g, b); |
| | | } |
| | | |
| | | __device__ float bilinear_interpolate_kernel(float *image, int w, int h, float x, float y, int c) |
| | | { |
| | | int ix = (int) floorf(x); |
| | | int iy = (int) floorf(y); |
| | |
| | | float dy = y - iy; |
| | | |
| | | float val = (1-dy) * (1-dx) * get_pixel_kernel(image, w, h, ix, iy, c) + |
| | | dy * (1-dx) * get_pixel_kernel(image, w, h, ix, iy+1, c) + |
| | | (1-dy) * dx * get_pixel_kernel(image, w, h, ix+1, iy, c) + |
| | | dy * dx * get_pixel_kernel(image, w, h, ix+1, iy+1, c); |
| | | dy * (1-dx) * get_pixel_kernel(image, w, h, ix, iy+1, c) + |
| | | (1-dy) * dx * get_pixel_kernel(image, w, h, ix+1, iy, c) + |
| | | dy * dx * get_pixel_kernel(image, w, h, ix+1, iy+1, c); |
| | | return val; |
| | | } |
| | | |
| | | __global__ void forward_crop_layer_kernel(float *input, int size, int c, int h, int w, int crop_height, int crop_width, int dh, int dw, int flip, float angle, float *output) |
| | | __global__ void levels_image_kernel(float *image, float *rand, int batch, int w, int h, int train, float saturation, float exposure, float translate, float scale, float shift) |
| | | { |
| | | int size = batch * w * h; |
| | | int id = (blockIdx.x + blockIdx.y*gridDim.x) * blockDim.x + threadIdx.x; |
| | | if(id >= size) return; |
| | | int x = id % w; |
| | | id /= w; |
| | | int y = id % h; |
| | | id /= h; |
| | | float rshift = rand[0]; |
| | | float gshift = rand[1]; |
| | | float bshift = rand[2]; |
| | | float r0 = rand[8*id + 0]; |
| | | float r1 = rand[8*id + 1]; |
| | | float r2 = rand[8*id + 2]; |
| | | float r3 = rand[8*id + 3]; |
| | | |
| | | saturation = r0*(saturation - 1) + 1; |
| | | saturation = (r1 > .5) ? 1./saturation : saturation; |
| | | exposure = r2*(exposure - 1) + 1; |
| | | exposure = (r3 > .5) ? 1./exposure : exposure; |
| | | |
| | | size_t offset = id * h * w * 3; |
| | | image += offset; |
| | | float r = image[x + w*(y + h*0)]; |
| | | float g = image[x + w*(y + h*1)]; |
| | | float b = image[x + w*(y + h*2)]; |
| | | float3 rgb = make_float3(r,g,b); |
| | | if(train){ |
| | | float3 hsv = rgb_to_hsv_kernel(rgb); |
| | | hsv.y *= saturation; |
| | | hsv.z *= exposure; |
| | | rgb = hsv_to_rgb_kernel(hsv); |
| | | } else { |
| | | shift = 0; |
| | | } |
| | | image[x + w*(y + h*0)] = rgb.x*scale + translate + (rshift - .5)*shift; |
| | | image[x + w*(y + h*1)] = rgb.y*scale + translate + (gshift - .5)*shift; |
| | | image[x + w*(y + h*2)] = rgb.z*scale + translate + (bshift - .5)*shift; |
| | | } |
| | | |
| | | __global__ void forward_crop_layer_kernel(float *input, float *rand, int size, int c, int h, int w, int crop_height, int crop_width, int train, int flip, float angle, float *output) |
| | | { |
| | | int id = (blockIdx.x + blockIdx.y*gridDim.x) * blockDim.x + threadIdx.x; |
| | | if(id >= size) return; |
| | |
| | | id /= c; |
| | | int b = id; |
| | | |
| | | float r4 = rand[8*b + 4]; |
| | | float r5 = rand[8*b + 5]; |
| | | float r6 = rand[8*b + 6]; |
| | | float r7 = rand[8*b + 7]; |
| | | |
| | | float dw = (w - crop_width)*r4; |
| | | float dh = (h - crop_height)*r5; |
| | | flip = (flip && (r6 > .5)); |
| | | angle = 2*angle*r7 - angle; |
| | | if(!train){ |
| | | dw = (w - crop_width)/2.; |
| | | dh = (h - crop_height)/2.; |
| | | flip = 0; |
| | | angle = 0; |
| | | } |
| | | |
| | | input += w*h*c*b; |
| | | |
| | | int x = (flip) ? w - dw - j - 1 : j + dw; |
| | | int y = i + dh; |
| | | float x = (flip) ? w - dw - j - 1 : j + dw; |
| | | float y = i + dh; |
| | | |
| | | float rx = cos(angle)*(x-cx) - sin(angle)*(y-cy) + cx; |
| | | float ry = sin(angle)*(x-cx) + cos(angle)*(y-cy) + cy; |
| | | |
| | | output[count] = billinear_interpolate_kernel(input, w, h, rx, ry, k); |
| | | output[count] = bilinear_interpolate_kernel(input, w, h, rx, ry, k); |
| | | } |
| | | |
| | | extern "C" void forward_crop_layer_gpu(crop_layer layer, network_state state) |
| | | { |
| | | int flip = (layer.flip && rand()%2); |
| | | int dh = rand()%(layer.h - layer.crop_height + 1); |
| | | int dw = rand()%(layer.w - layer.crop_width + 1); |
| | | float angle = rand_uniform() - .5; |
| | | if(!state.train){ |
| | | angle = 0; |
| | | flip = 0; |
| | | dh = (layer.h - layer.crop_height)/2; |
| | | dw = (layer.w - layer.crop_width)/2; |
| | | cuda_random(layer.rand_gpu, layer.batch*8); |
| | | |
| | | float radians = layer.angle*3.14159/180.; |
| | | |
| | | float scale = 2; |
| | | float translate = -1; |
| | | if(layer.noadjust){ |
| | | scale = 1; |
| | | translate = 0; |
| | | } |
| | | int size = layer.batch*layer.c*layer.crop_width*layer.crop_height; |
| | | |
| | | dim3 dimBlock(BLOCK, 1, 1); |
| | | dim3 dimGrid((size-1)/BLOCK + 1, 1, 1); |
| | | int size = layer.batch * layer.w * layer.h; |
| | | |
| | | forward_crop_layer_kernel<<<cuda_gridsize(size), BLOCK>>>(state.input, size, layer.c, layer.h, layer.w, |
| | | layer.crop_height, layer.crop_width, dh, dw, flip, angle, layer.output_gpu); |
| | | levels_image_kernel<<<cuda_gridsize(size), BLOCK>>>(state.input, layer.rand_gpu, layer.batch, layer.w, layer.h, state.train, layer.saturation, layer.exposure, translate, scale, layer.shift); |
| | | check_error(cudaPeekAtLastError()); |
| | | |
| | | size = layer.batch*layer.c*layer.out_w*layer.out_h; |
| | | |
| | | forward_crop_layer_kernel<<<cuda_gridsize(size), BLOCK>>>(state.input, layer.rand_gpu, size, layer.c, layer.h, layer.w, layer.out_h, layer.out_w, state.train, layer.flip, radians, layer.output_gpu); |
| | | check_error(cudaPeekAtLastError()); |
| | | |
| | | /* |
| | | cuda_pull_array(layer.output_gpu, layer.output, size); |
| | | image im = float_to_image(layer.crop_width, layer.crop_height, layer.c, layer.output + 0*(size/layer.batch)); |
| | | image im2 = float_to_image(layer.crop_width, layer.crop_height, layer.c, layer.output + 1*(size/layer.batch)); |
| | | image im3 = float_to_image(layer.crop_width, layer.crop_height, layer.c, layer.output + 2*(size/layer.batch)); |
| | | |
| | | translate_image(im, -translate); |
| | | scale_image(im, 1/scale); |
| | | translate_image(im2, -translate); |
| | | scale_image(im2, 1/scale); |
| | | translate_image(im3, -translate); |
| | | scale_image(im3, 1/scale); |
| | | |
| | | show_image(im, "cropped"); |
| | | show_image(im2, "cropped2"); |
| | | show_image(im3, "cropped3"); |
| | | cvWaitKey(0); |
| | | */ |
| | | } |
| | | |