-
Notifications
You must be signed in to change notification settings - Fork 0
/
Program.cs
77 lines (72 loc) · 2.65 KB
/
Program.cs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
//
// Copyright 2012 ThoughtWorks, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at:
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
using System;
using System.Diagnostics;
using System.Drawing;
using System.IO;
using System.Linq;
namespace grayscale
{
class Program
{
static void Main(string[] args)
{
var directory = args.Length == 0 ? "." : args[0];
directory = directory.EndsWith("\\") ? directory : directory + "\\";
TextWriterTraceListener log = null;
try
{
using (var filestream = new FileStream(directory + "log.csv", FileMode.Create, FileAccess.Write, FileShare.Read))
{
log = new TextWriterTraceListener(filestream);
foreach (var file in new DirectoryInfo(directory).GetFiles().Select(file => file.Name))
{
var begin = DateTime.Now;
using (var source = new Bitmap(Image.FromFile(file)))
{
using (var bm = ConvertToGrayscale(source))
{
bm.Save(string.Format("{0}{1}.{2}", directory, "gray", file));
}
}
var end = DateTime.Now;
log.WriteLine(string.Format("{0},gray.{0},{1}", file, end - begin));
log.Flush();
}
}
}
catch (Exception ex)
{
log.WriteLine(ex.Message);
log.WriteLine(ex.StackTrace);
}
}
internal static Bitmap ConvertToGrayscale(Bitmap source)
{
var bm = new Bitmap(source.Width, source.Height);
for (var y = 0; y < bm.Height; y++)
{
for (var x = 0; x < bm.Width; x++)
{
var c = source.GetPixel(x, y);
var luma = (int)(c.R * 0.3 + c.G * 0.59 + c.B * 0.11);
bm.SetPixel(x, y, Color.FromArgb(luma, luma, luma));
}
}
return bm;
}
}
}