From 79fffcce3ce495bd415dc1284224c915d7194d4c Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Thu, 11 Dec 2014 21:15:26 +0000
Subject: [PATCH] Better imagenet distributed training
---
src/image.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/src/image.c b/src/image.c
index b946be8..a2664a9 100644
--- a/src/image.c
+++ b/src/image.c
@@ -7,6 +7,16 @@
void draw_box(image a, int x1, int y1, int x2, int y2)
{
int i, c;
+ if(x1 < 0) x1 = 0;
+ if(x1 >= a.w) x1 = a.w-1;
+ if(x2 < 0) x2 = 0;
+ if(x2 >= a.w) x2 = a.w-1;
+
+ if(y1 < 0) y1 = 0;
+ if(y1 >= a.h) y1 = a.h-1;
+ if(y2 < 0) y2 = 0;
+ if(y2 >= a.h) y2 = a.h-1;
+
for(c = 0; c < a.c; ++c){
for(i = x1; i < x2; ++i){
a.data[i + y1*a.w + c*a.w*a.h] = (c==0)?1:-1;
@@ -21,6 +31,20 @@
}
}
+void jitter_image(image a, int h, int w, int dh, int dw)
+{
+ int i,j,k;
+ for(k = 0; k < a.c; ++k){
+ for(i = 0; i < h; ++i){
+ for(j = 0; j < w; ++j){
+ int src = j + dw + (i+dh)*a.w + k*a.w*a.h;
+ int dst = j + i*w + k*w*h;
+ a.data[dst] = a.data[src];
+ }
+ }
+ }
+}
+
image image_distance(image a, image b)
{
int i,j;
--
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