Another update from ingydotnet^djgoku

2015-11-18 06:14:39 +00:00 · 2015-11-18 06:14:39 +00:00 · 948b86eafa
commit 948b86eafa
parent 91df62d461
7604 changed files with 108452 additions and 22726 deletions
--- a/Task/Bitmap-Read-a-PPM-file/Julia/bitmap-read-a-ppm-file.julia
+++ b/Task/Bitmap-Read-a-PPM-file/Julia/bitmap-read-a-ppm-file.julia
@ -0,0 +1,13 @@
+using Color, Images, FixedPointNumbers
+
+const M_RGB_Y = reshape(Color.M_RGB_XYZ[2,:], 3)
+
+function rgb2gray(img::Image)
+    g = red(img)*M_RGB_Y[1] + green(img)*M_RGB_Y[2] + blue(img)*M_RGB_Y[3]
+    g = clamp(g, 0.0, 1.0)
+    return grayim(g)
+end
+
+ima = imread("bitmap_read_ppm_in.ppm")
+imb = convert(Image{Gray{Ufixed8}}, ima)
+imwrite(imb, "bitmap_read_ppm_out.png")