/// <summary>
/// Modifies channel balance using memory-friendly Pipeline API
/// </summary>
private static void ChannelBalanceMemoryFriendly()
{
using (var reader = ImageReader.Create("../../../../_Input/Chicago.jpg"))
using (var channelBalance = new ChannelBalance()
{
// Pixel format specifies the order of channels
// Example: Format24bppRgb - [Blue]|[Green]|[Red]
// http://www.graphicsmill.com/docs/gm/accessing-pixel-data.htm#PixelsInMemory
Addends = new float[] { 0.0f, 0.0f, 0.3f }
})
using (var writer = ImageWriter.Create("../../../../_Output/ChannelBalanceMemoryFriendly.jpg"))
{
Pipeline.Run(reader + channelBalance + writer);
}
}
public static void ProcessImage(IProcessorItem item)
{
using (ImageReader reader = ImageReader.Create(item.Source))
using (var contrast = new Contrast(item.Correction.Contrast))
using (var levels = new Levels(item.Correction.Black, item.Correction.White, item.Correction.Shadow, item.Correction.Midpoint, item.Correction.Highlight, HistogramMode.Luminosity))
using (var color = new ChannelBalance())
using (var rotate = new Rotate(item.Correction.Rotate))
using (var saturation = new AdjustHsl(0f, item.Correction.Saturation, 0f))
using (var writer = new JpegWriter(Path.ChangeExtension(item.Destination, "jpg"), 99))
{
color.Addends = new float[3]
{
item.Correction.Blue,
item.Correction.Green,
item.Correction.Red
};
color.Multipliers = new float[3]
{
1f,
1f,
1f
};
writer.UseSubsampling = false;
Pipeline.Run(reader + contrast + levels + color + rotate + saturation + writer);
}
}
