源码中包含了图像特效滤镜应用，具备灰度和亮度调节功能

private void btnApply12_Click(object sender, EventArgs e) { if (cmbBox12.SelectedIndex == -1) { MessageBox.Show("请选择图像特效滤镜!"); return; } //释放图像引擎当前滤镜组,如果希望叠加多个滤镜的效果，则不需要清理，依次加入想要应用的滤镜特效即可 //本引擎会自动按照添加的先后顺序对原始图片应用滤镜特效 engine.Effects.Clear(); //释放资源 if (pictureBox2.Image != null) { pictureBox2.Image.Dispose(); pictureBox2.Image = null; } //重新加载图像 LoadImage(); #region 根据选择的滤镜类型，应用滤镜到图像引擎 switch (cmbBox12.SelectedIndex) { case 0: { #region 亮度调整 AdjustBrightnessEffect effect = new AdjustBrightnessEffect(); effect.Level = 100; engine.Effects.Clear(); engine.Effects.Add(effect); pictureBox2.Image = engine.GetOutputImage(); #endregion } break; case 1: { #region 对比度调整 AdjustContrastEffect effect = new AdjustContrastEffect(); effect.Level = 100; engine.Effects.Clear(); engine.Effects.Add(effect); pictureBox2.Image = engine.GetOutputImage(); #endregion } break; case 2: { #region gamma调整 AdjustGammaEffect effect = new AdjustGammaEffect(); effect.Gamma = 10; engine.Effects.Clear(); engine.Effects.Add(effect); pictureBox2.Image = engine.GetOutputImage(); #endregion