From 5a47c46b39475fc3581b9819f488b977ea1beca3 Mon Sep 17 00:00:00 2001
From: Edmond Yoo <hj3yoo@uwaterloo.ca>
Date: Sun, 16 Sep 2018 03:11:04 +0000
Subject: [PATCH] Moving files from MTGCardDetector
---
src/im2col.c | 179 +++++++----------------------------------------------------
1 files changed, 21 insertions(+), 158 deletions(-)
diff --git a/src/im2col.c b/src/im2col.c
index 6ed9d89..69ec98a 100644
--- a/src/im2col.c
+++ b/src/im2col.c
@@ -1,7 +1,6 @@
-#include "mini_blas.h"
+#include "im2col.h"
#include <stdio.h>
-
-inline float im2col_get_pixel(float *im, int height, int width, int channels,
+float im2col_get_pixel(float *im, int height, int width, int channels,
int row, int col, int channel, int pad)
{
row -= pad;
@@ -9,169 +8,33 @@
if (row < 0 || col < 0 ||
row >= height || col >= width) return 0;
- return im[col + width*(row + channel*height)];
+ return im[col + width*(row + height*channel)];
}
//From Berkeley Vision's Caffe!
//https://github.com/BVLC/caffe/blob/master/LICENSE
-void im2col_cpu_batch(float* data_im,
- const int batch, const int channels, const int height, const int width,
- const int ksize, const int stride, int pad, float* data_col)
+void im2col_cpu(float* data_im,
+ int channels, int height, int width,
+ int ksize, int stride, int pad, float* data_col)
{
- int c,h,w,b;
- int height_col = (height - ksize) / stride + 1;
- int width_col = (width - ksize) / stride + 1;
- if (pad){
- height_col = 1 + (height-1) / stride;
- width_col = 1 + (width-1) / stride;
- pad = ksize/2;
- }
+ int c,h,w;
+ int height_col = (height + 2*pad - ksize) / stride + 1;
+ int width_col = (width + 2*pad - ksize) / stride + 1;
+
int channels_col = channels * ksize * ksize;
- int im_size = height*width*channels;
- //int col_size = height_col*width_col*channels_col;
- for (b = 0; b < batch; ++b) {
- for (c = 0; c < channels_col; ++c) {
- int w_offset = c % ksize;
- int h_offset = (c / ksize) % ksize;
- int c_im = c / ksize / ksize;
- for (h = 0; h < height_col; ++h) {
- for (w = 0; w < width_col; ++w) {
- int im_row = h_offset + h * stride;
- int im_col = w_offset + w * stride;
- int col_index = (c * height_col + h) * width_col + w + (batch-1) * c * height_col*width_col;
- data_col[col_index] = im2col_get_pixel(data_im, height, width, channels,
- im_row, im_col, c_im, pad);
- }
+ for (c = 0; c < channels_col; ++c) {
+ int w_offset = c % ksize;
+ int h_offset = (c / ksize) % ksize;
+ int c_im = c / ksize / ksize;
+ for (h = 0; h < height_col; ++h) {
+ for (w = 0; w < width_col; ++w) {
+ int im_row = h_offset + h * stride;
+ int im_col = w_offset + w * stride;
+ int col_index = (c * height_col + h) * width_col + w;
+ data_col[col_index] = im2col_get_pixel(data_im, height, width, channels,
+ im_row, im_col, c_im, pad);
}
}
- data_im += im_size;
- data_col+= channels_col;
}
}
-//From Berkeley Vision's Caffe!
-//https://github.com/BVLC/caffe/blob/master/LICENSE
-void im2col_cpu(float* data_im, const int batch,
- const int channels, const int height, const int width,
- const int ksize, const int stride, int pad, float* data_col)
-{
- int c,h,w,b;
- int height_col = (height - ksize) / stride + 1;
- int width_col = (width - ksize) / stride + 1;
- if (pad){
- height_col = 1 + (height-1) / stride;
- width_col = 1 + (width-1) / stride;
- pad = ksize/2;
- }
- int channels_col = channels * ksize * ksize;
- int im_size = height*width*channels;
- int col_size = height_col*width_col*channels_col;
- for (b = 0; b < batch; ++b) {
- for (c = 0; c < channels_col; ++c) {
- int w_offset = c % ksize;
- int h_offset = (c / ksize) % ksize;
- int c_im = c / ksize / ksize;
- for (h = 0; h < height_col; ++h) {
- for (w = 0; w < width_col; ++w) {
- int im_row = h_offset + h * stride;
- int im_col = w_offset + w * stride;
- int col_index = (c * height_col + h) * width_col + w;
- data_col[col_index] = im2col_get_pixel(data_im, height, width, channels,
- im_row, im_col, c_im, pad);
- }
- }
- }
- data_im += im_size;
- data_col += col_size;
- }
-}
-
-
-#ifdef GPU
-
-#include "opencl.h"
-#include <math.h>
-
-cl_kernel get_im2col_kernel()
-{
- static int init = 0;
- static cl_kernel im2col_kernel;
- if(!init){
- im2col_kernel = get_kernel("src/im2col.cl", "im2col", 0);
- init = 1;
- }
- return im2col_kernel;
-}
-
-
-void im2col_ongpu(cl_mem data_im, const int batch,
- const int channels, const int height, const int width,
- const int ksize, const int stride, cl_mem data_col)
-{
- cl_setup();
- cl_kernel im2col_kernel = get_im2col_kernel();
- cl_command_queue queue = cl.queue;
-
- cl_uint i = 0;
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(data_im), (void*) &data_im);
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(batch), (void*) &batch);
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(channels), (void*) &channels);
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(height), (void*) &height);
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(width), (void*) &width);
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(ksize), (void*) &ksize);
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(stride), (void*) &stride);
- cl.error = clSetKernelArg(im2col_kernel, i++, sizeof(data_col), (void*) &data_col);
- check_error(cl);
-
- int height_col = (height - ksize) / stride + 1;
- int width_col = (width - ksize) / stride + 1;
- int channels_col = channels * ksize * ksize;
-
- size_t global_size[2];
- size_t local_size[2];
- global_size[0] = batch;
- global_size[1] = channels_col;
- local_size[0] = height_col;
- local_size[1] = width_col;
-
- clEnqueueNDRangeKernel(queue, im2col_kernel, 2, 0,
- global_size, local_size, 0, 0, 0);
- check_error(cl);
-}
-
-void im2col_gpu(float *data_im,
- const int batch, const int channels, const int height, const int width,
- const int ksize, const int stride,
- float *data_col)
-{
- cl_setup();
- cl_context context = cl.context;
- cl_command_queue queue = cl.queue;
-
- size_t size = sizeof(float)*(channels*height*width*batch);
- cl_mem im_gpu = clCreateBuffer(context,
- CL_MEM_READ_ONLY|CL_MEM_COPY_HOST_PTR,
- size, data_im, &cl.error);
- check_error(cl);
-
- int height_col = (height - ksize) / stride + 1;
- int width_col = (width - ksize) / stride + 1;
- int channels_col = channels * ksize * ksize;
-
- size = sizeof(float)*(height_col*width_col*channels_col*batch);
- cl_mem col_gpu = clCreateBuffer(context,
- CL_MEM_WRITE_ONLY|CL_MEM_COPY_HOST_PTR,
- size, data_col, &cl.error);
- check_error(cl);
-
- im2col_ongpu(im_gpu, batch, channels, height, width,
- ksize, stride, col_gpu);
-
- clEnqueueReadBuffer(queue, col_gpu, CL_TRUE, 0, size, data_col, 0, 0, 0);
- check_error(cl);
-
- clReleaseMemObject(col_gpu);
- clReleaseMemObject(im_gpu);
-}
-
-#endif
--
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