From 6553b3f0e3e55fc30a99c7d4b5798aa86d18a114 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Mon, 30 Mar 2015 02:31:47 +0000
Subject: [PATCH] no comment
---
src/image.c | 24 ++++++++++++++++++++++++
1 files changed, 24 insertions(+), 0 deletions(-)
diff --git a/src/image.c b/src/image.c
index 174b24c..2cfce63 100644
--- a/src/image.c
+++ b/src/image.c
@@ -395,6 +395,26 @@
return out;
}
+image crop_image(image im, int dr, int dc, int h, int w)
+{
+ image cropped = make_image(h, w, im.c);
+ int i, j, k;
+ for(k = 0; k < im.c; ++k){
+ for(j = 0; j < h; ++j){
+ for(i = 0; i < w; ++i){
+ int r = j + dr;
+ int c = i + dc;
+ float val = 128;
+ if (r >= 0 && r < im.h && c >= 0 && c < im.w) {
+ val = get_pixel(im, r, c, k);
+ }
+ set_pixel(cropped, j, i, k, val);
+ }
+ }
+ }
+ return cropped;
+}
+
// #wikipedia
image resize_image(image im, int h, int w)
{
@@ -427,9 +447,13 @@
image im = load_image(filename, 0,0);
image small = resize_image(im, 63, 65);
image big = resize_image(im, 512, 513);
+ image crop = crop_image(im, 10, 50, 100, 100);
+ image crop2 = crop_image(im, -50, -30, 400, 291);
show_image(im, "original");
show_image(small, "smaller");
show_image(big, "bigger");
+ show_image(crop, "crop");
+ show_image(crop2, "crop2");
cvWaitKey(0);
}
--
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