From d41c941ded0f478e3bf4e87d2c0f137f7c91ee22 Mon Sep 17 00:00:00 2001
From: Dong-hee Na <donghee.na92@gmail.com>
Date: Sun, 19 Aug 2018 16:28:14 +0900
Subject: [PATCH] transforms: Fix the logic which getting a size of image

---
 transforms/pixels.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/transforms/pixels.go b/transforms/pixels.go
index 744c4ac..378e1b5 100644
--- a/transforms/pixels.go
+++ b/transforms/pixels.go
@@ -11,7 +11,7 @@ import (
 // Rgb2Gray function converts RGB to a gray scale array.
 func Rgb2Gray(colorImg image.Image) [][]float64 {
 	bounds := colorImg.Bounds()
-	w, h := bounds.Max.X, bounds.Max.Y
+	w, h := bounds.Max.X-bounds.Min.X, bounds.Max.Y-bounds.Min.Y
 	pixels := make([][]float64, h)
 
 	for i := range pixels {