【C#】画像の輝度値の取得設定速度の比較

set_get_bright_speed_6.cs

pictureBox1.SizeMode = PictureBoxSizeMode.Zoom;

var bmp = new Bitmap(@"C:\Temp\syurijou.JPG");  // 6000 x 4000 x 24bit

pictureBox1.Image = bmp;

var sw = new System.Diagnostics.Stopwatch();

MessageBox.Show("開始");

sw.Start();
// GetPixel、SetPixel
NegativeImage1(bmp);
sw.Stop();
pictureBox1.Refresh();
MessageBox.Show($"NegativeImage1: {sw.ElapsedMilliseconds} msec");

sw.Reset();
sw.Start();
// 配列を介す方法
NegativeImage2(bmp);
sw.Stop();
pictureBox1.Refresh();
MessageBox.Show($"NegativeImage2: {sw.ElapsedMilliseconds} msec");

sw.Reset();
sw.Start();
// MershalのReadByte、WriteByte
NegativeImage3(bmp);
sw.Stop();
pictureBox1.Refresh();
MessageBox.Show($"NegativeImage3: {sw.ElapsedMilliseconds} msec");

sw.Reset();
sw.Start();
// usafeのポインタ
NegativeImage4(bmp);
sw.Stop();
pictureBox1.Refresh();
MessageBox.Show($"NegativeImage4: {sw.ElapsedMilliseconds} msec");

sw.Reset();
sw.Start();
// usafeのポインタの並列処理
NegativeImage5(bmp);
sw.Stop();
pictureBox1.Refresh();
MessageBox.Show($"NegativeImage5: {sw.ElapsedMilliseconds} msec");

【C#】画像の輝度値の取得設定速度の比較
https://imagingsolution.net/program/set_get_bright_speed/