using?System;
using?System.Collections.Generic;
using?System.Drawing;
using?System.Drawing.Imaging;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;

namespace?imagecalc
{
???public?class?CommonCalc
????{
????????///?

????????///?伽馬?Gamma校正
????????///?

????????///?輸入Bitmap
????????///?[0?<-明-?1?-暗->?2]
????????///?輸出Bitmap
????????public?static?Bitmap?KiGamma（Bitmap?bmp?float?val）
????????{
????????????if?（bmp?==?null）
????????????{
????????????????return?null;
????????????}

????????????//?1表示無變化，就不做
????????????if?（val?==?1.0000f）?return?bmp;

????????????try
????????????{
????????????????Bitmap?b?=?new?Bitmap（bmp.Width?bmp.Height）;
????????????????Graphics?g?=?Graphics.FromImage（b）;
????????????????ImageAttributes?attr?=?new?ImageAttributes（）;

????????????????attr.SetGamma（val?ColorAdjustType.Bitmap）;
????????????????g.DrawImage（bmp?new?Rectangle（0?0?bmp.Width?bmp.Height）?0?0?bmp.Width?bmp.Height?GraphicsUnit.Pixel?attr）;
????????????????g.Dispose（）;
????????????????return?b;
????????????}
????????????catch
????????????{
????????????????return?null;
????????????}
????????}

?????

????????///?

????????///?圖像對比度調整
????????///?

????????///?原始圖
????????///?對比度[-100?100]
????????///?
????????public?static?Bitmap?KiContrast（Bitmap?b?int?degree）
????????{
????????????if?（b?==?null）
????????????{
????????????????return?null;
????????????}

????????????//改成0-100，??50不變。

????????????if?（degree?????????????if?（degree?>?100）?degree?=?100;

????????????try
????????????{

????????????????double?pixel?=?0;
????????????????double?contrast?=?（100.0?+?degree）?/?100.0;
????????????????contrast?*=?contrast;
????????????????int?width?=?b.Width;
????????????????int?height?=?b.Height;
????????????????BitmapData?data?=?b.LockBits（new?Rectangle（0?0?width?height）?ImageLockMode.ReadWrite?PixelFormat.Format24bppRgb）;
????????????????unsafe
????????????????{
????????????????????byte*?p?=?（byte*）data.Scan0;
????????????????????int?offset?=?data.Stride?-?width?*?3;
????????????????????for?（int?y?=?0;?y?????????????????????{
????????????????????????for?（int?x?=?0;?x?????????????????????????{
????????????????????????????//?處理指定位置像素的對比度
????????????????????????????for?（int?i?=?0;?i?????????????????????????????{
????????????????????????????????pixel?=?（（p[i]?/?255.0?-?0.5）?*?contrast?+?0.5）?*?255;
????????????????????????????????if?（pixel?????????????????????????????????if?（pixel?>?255）?pixel?=?255;
????????????????????????????????p[i]?=?（byte）pixel;
????????????????????????????}?//?i
????????????????????????????p?+=?3;
????????????????????????}?//?x
????????????????????????p?+=?offset;
???

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????2946??2020-12-09?15:34??imagecalc.sln
?????目錄???????????0??2020-12-10?09:59??imagecalc\
?????文件?????????189??2020-12-04?14:51??imagecalc\App.config
?????目錄???????????0??2020-12-04?14:51??imagecalc\bin\
?????目錄???????????0??2020-12-08?11:51??imagecalc\bin\Debug\
?????文件??????932747??2020-12-04?16:52??imagecalc\bin\Debug\1.jpg
?????文件?????1011091??2020-12-05?14:31??imagecalc\bin\Debug\2.jpg
?????文件?????1234985??2020-01-20?14:08??imagecalc\bin\Debug\3.jpg
?????文件?????1397640??2020-01-20?14:08??imagecalc\bin\Debug\4.jpg
?????文件??????372438??2020-11-30?16:51??imagecalc\bin\Debug\5.jpg
?????文件??????505480??2020-11-30?16:51??imagecalc\bin\Debug\6.jpg
?????文件??????540280??2020-11-30?16:51??imagecalc\bin\Debug\7.jpg
?????文件??????589616??2020-11-30?16:51??imagecalc\bin\Debug\8.jpg
?????文件?????1239013??2020-11-30?16:51??imagecalc\bin\Debug\9.jpg
?????文件???????24064??2020-12-10?09:59??imagecalc\bin\Debug\imagecalc.exe
?????文件?????????189??2020-12-04?14:51??imagecalc\bin\Debug\imagecalc.exe.config
?????文件???????69120??2020-12-10?09:59??imagecalc\bin\Debug\imagecalc.pdb
?????文件??????920918??2020-12-05?14:51??imagecalc\bin\Debug\test.jpg
?????文件??????971723??2020-12-10?09:59??imagecalc\bin\Debug\糾偏1.jpg
?????文件????????4548??2020-12-09?11:28??imagecalc\CommonCalc.cs
?????文件????????5329??2020-12-04?15:03??imagecalc\Deskew.cs
?????文件????????1301??2020-12-04?16:56??imagecalc\deskew2.cs
?????文件????????9097??2020-12-04?16:56??imagecalc\DeskewOperat.cs
?????文件????????7956??2020-12-10?09:59??imagecalc\Form1.cs
?????文件???????14112??2020-12-10?09:59??imagecalc\Form1.Designer.cs
?????文件????????5817??2020-12-10?09:59??imagecalc\Form1.resx
?????文件????????5269??2020-12-04?16:56??imagecalc\gmseDeskew.cs
?????文件????????3855??2020-12-04?16:56??imagecalc\imagecalc.csproj
?????目錄???????????0??2020-12-04?14:51??imagecalc\obj\
?????目錄???????????0??2020-12-10?09:59??imagecalc\obj\Debug\
?????文件????????1443??2020-12-08?11:47??imagecalc\obj\Debug\DesignTimeResolveAssemblyReferences.cache
............此處省略20個文件信息