From 168af40fe9a3cc81c6ee16b3e81f154780c36bdb Mon Sep 17 00:00:00 2001
From: Scheaven <xuepengqiang>
Date: 星期四, 03 六月 2021 15:03:27 +0800
Subject: [PATCH] up new v4
---
lib/detecter_tools/darknet/im2col.c | 186 +++++++++++++++++++++++-----------------------
1 files changed, 93 insertions(+), 93 deletions(-)
diff --git a/lib/detecter_tools/darknet/im2col.c b/lib/detecter_tools/darknet/im2col.c
index 3fc8c27..4951f8f 100644
--- a/lib/detecter_tools/darknet/im2col.c
+++ b/lib/detecter_tools/darknet/im2col.c
@@ -1,93 +1,93 @@
-#include "im2col.h"
-#include <stdio.h>
-float im2col_get_pixel(float *im, int height, int width, int channels,
- int row, int col, int channel, int pad)
-{
- row -= pad;
- col -= pad;
-
- if (row < 0 || col < 0 ||
- row >= height || col >= width) return 0;
- return im[col + width*(row + height*channel)];
-}
-
-//From Berkeley Vision's Caffe!
-//https://github.com/BVLC/caffe/blob/master/LICENSE
-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;
- int height_col = (height + 2*pad - ksize) / stride + 1;
- int width_col = (width + 2*pad - ksize) / stride + 1;
-
- int channels_col = channels * ksize * ksize;
- 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);
- }
- }
- }
-}
-
-
-// Function uses casting from int to unsigned to compare if value of
-// parameter a is greater or equal to zero and lower than value of
-// parameter b. The b parameter is of type signed and is always positive,
-// therefore its value is always lower than 0x800... where casting
-// negative value of a parameter converts it to value higher than 0x800...
-// The casting allows to use one condition instead of two.
-inline static int is_a_ge_zero_and_a_lt_b(int a, int b) {
- return (unsigned)(a) < (unsigned)(b);
-}
-
-// https://github.com/BVLC/caffe/blob/master/src/caffe/util/im2col.cpp
-void im2col_cpu_ext(const float* data_im, const int channels,
- const int height, const int width, const int kernel_h, const int kernel_w,
- const int pad_h, const int pad_w,
- const int stride_h, const int stride_w,
- const int dilation_h, const int dilation_w,
- float* data_col)
-{
- const int output_h = (height + 2 * pad_h -
- (dilation_h * (kernel_h - 1) + 1)) / stride_h + 1;
- const int output_w = (width + 2 * pad_w -
- (dilation_w * (kernel_w - 1) + 1)) / stride_w + 1;
- const int channel_size = height * width;
- int channel, kernel_row, kernel_col, output_rows, output_col;
- for (channel = channels; channel--; data_im += channel_size) {
- for (kernel_row = 0; kernel_row < kernel_h; kernel_row++) {
- for (kernel_col = 0; kernel_col < kernel_w; kernel_col++) {
- int input_row = -pad_h + kernel_row * dilation_h;
- for (output_rows = output_h; output_rows; output_rows--) {
- if (!is_a_ge_zero_and_a_lt_b(input_row, height)) {
- for (output_col = output_w; output_col; output_col--) {
- *(data_col++) = 0;
- }
- }
- else {
- int input_col = -pad_w + kernel_col * dilation_w;
- for (output_col = output_w; output_col; output_col--) {
- if (is_a_ge_zero_and_a_lt_b(input_col, width)) {
- *(data_col++) = data_im[input_row * width + input_col];
- }
- else {
- *(data_col++) = 0;
- }
- input_col += stride_w;
- }
- }
- input_row += stride_h;
- }
- }
- }
- }
-}
+#include "im2col.h"
+#include <stdio.h>
+float im2col_get_pixel(float *im, int height, int width, int channels,
+ int row, int col, int channel, int pad)
+{
+ row -= pad;
+ col -= pad;
+
+ if (row < 0 || col < 0 ||
+ row >= height || col >= width) return 0;
+ return im[col + width*(row + height*channel)];
+}
+
+//From Berkeley Vision's Caffe!
+//https://github.com/BVLC/caffe/blob/master/LICENSE
+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;
+ int height_col = (height + 2*pad - ksize) / stride + 1;
+ int width_col = (width + 2*pad - ksize) / stride + 1;
+
+ int channels_col = channels * ksize * ksize;
+ 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);
+ }
+ }
+ }
+}
+
+
+// Function uses casting from int to unsigned to compare if value of
+// parameter a is greater or equal to zero and lower than value of
+// parameter b. The b parameter is of type signed and is always positive,
+// therefore its value is always lower than 0x800... where casting
+// negative value of a parameter converts it to value higher than 0x800...
+// The casting allows to use one condition instead of two.
+inline static int is_a_ge_zero_and_a_lt_b(int a, int b) {
+ return (unsigned)(a) < (unsigned)(b);
+}
+
+// https://github.com/BVLC/caffe/blob/master/src/caffe/util/im2col.cpp
+void im2col_cpu_ext(const float* data_im, const int channels,
+ const int height, const int width, const int kernel_h, const int kernel_w,
+ const int pad_h, const int pad_w,
+ const int stride_h, const int stride_w,
+ const int dilation_h, const int dilation_w,
+ float* data_col)
+{
+ const int output_h = (height + 2 * pad_h -
+ (dilation_h * (kernel_h - 1) + 1)) / stride_h + 1;
+ const int output_w = (width + 2 * pad_w -
+ (dilation_w * (kernel_w - 1) + 1)) / stride_w + 1;
+ const int channel_size = height * width;
+ int channel, kernel_row, kernel_col, output_rows, output_col;
+ for (channel = channels; channel--; data_im += channel_size) {
+ for (kernel_row = 0; kernel_row < kernel_h; kernel_row++) {
+ for (kernel_col = 0; kernel_col < kernel_w; kernel_col++) {
+ int input_row = -pad_h + kernel_row * dilation_h;
+ for (output_rows = output_h; output_rows; output_rows--) {
+ if (!is_a_ge_zero_and_a_lt_b(input_row, height)) {
+ for (output_col = output_w; output_col; output_col--) {
+ *(data_col++) = 0;
+ }
+ }
+ else {
+ int input_col = -pad_w + kernel_col * dilation_w;
+ for (output_col = output_w; output_col; output_col--) {
+ if (is_a_ge_zero_and_a_lt_b(input_col, width)) {
+ *(data_col++) = data_im[input_row * width + input_col];
+ }
+ else {
+ *(data_col++) = 0;
+ }
+ input_col += stride_w;
+ }
+ }
+ input_row += stride_h;
+ }
+ }
+ }
+ }
+}
--
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