C# Class AForge.Imaging.ImageStatistics

Gather statistics about image in RGB color space.

The class is used to accumulate statistical values about images, like histogram, mean, standard deviation, etc. for each color channel in RGB color space.

The class accepts 8 bpp grayscale and 24/32 bpp color images for processing.

Sample usage:

 // gather statistics ImageStatistics stat = new ImageStatistics( image ); // get red channel's histogram Histogram red = stat.Red; // check mean value of red channel if ( red.Mean > 128 ) { // do further processing }

ファイルを表示 Open project: holisticware-admin/MonoVersal.AForgeNET Class Usage Examples

Public Methods

Method	Description
ImageStatistics ( Bitmap image ) : System	Initializes a new instance of the ImageStatistics class.
ImageStatistics ( Bitmap image, Bitmap mask ) : System	Initializes a new instance of the ImageStatistics class. The mask image must be a grayscale/binary (8bpp) image of the same size as the specified source image, where black pixels (value 0) correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which are none black in the mask image.
ImageStatistics ( Bitmap image, byte mask ) : System	Initializes a new instance of the ImageStatistics class. The mask array must be of the same size as the specified source image, where 0 values correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which have none zero corresponding value in the mask.
ImageStatistics ( UnmanagedImage image ) : System	Initializes a new instance of the ImageStatistics class.
ImageStatistics ( UnmanagedImage image, UnmanagedImage mask ) : System	Initializes a new instance of the ImageStatistics class. The mask image must be a grayscale/binary (8bpp) image of the same size as the specified source image, where black pixels (value 0) correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which are none black in the mask image.
ImageStatistics ( UnmanagedImage image, byte mask ) : System	Initializes a new instance of the ImageStatistics class. The mask array must be of the same size as the specified source image, where 0 values correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which have none zero corresponding value in the mask.

Private Methods

Method	Description
CheckMaskProperties ( PixelFormat maskFormat, Size maskSize, Size sourceImageSize ) : void
CheckSourceFormat ( PixelFormat pixelFormat ) : void
ProcessImage ( UnmanagedImage image, byte mask, int maskLineSize ) : void

Method Details

ImageStatistics() public method

Initializes a new instance of the ImageStatistics class.

Source pixel format is not supported.

public ImageStatistics ( Bitmap image ) : System
image	System.Drawing.Bitmap	Image to gather statistics about.
return	System

ImageStatistics() public method

Initializes a new instance of the ImageStatistics class.

The mask image must be a grayscale/binary (8bpp) image of the same size as the specified source image, where black pixels (value 0) correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which are none black in the mask image.

Source pixel format is not supported. Mask image must be 8 bpp grayscale image. Mask must have the same size as the source image to get statistics for.

public ImageStatistics ( Bitmap image, Bitmap mask ) : System
image	System.Drawing.Bitmap	Image to gather statistics about.
mask	System.Drawing.Bitmap	Mask image which specifies areas to collect statistics for.
return	System

ImageStatistics() public method

Initializes a new instance of the ImageStatistics class.

The mask array must be of the same size as the specified source image, where 0 values correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which have none zero corresponding value in the mask.

Source pixel format is not supported. Mask must have the same size as the source image to get statistics for.

public ImageStatistics ( Bitmap image, byte mask ) : System
image	System.Drawing.Bitmap	Image to gather statistics about.
mask	byte	Mask array which specifies areas to collect statistics for.
return	System

ImageStatistics() public method

Initializes a new instance of the ImageStatistics class.

Source pixel format is not supported.

public ImageStatistics ( UnmanagedImage image ) : System
image	UnmanagedImage	Unmanaged image to gather statistics about.
return	System

ImageStatistics() public method

Initializes a new instance of the ImageStatistics class.

The mask image must be a grayscale/binary (8bpp) image of the same size as the specified source image, where black pixels (value 0) correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which are none black in the mask image.

Source pixel format is not supported. Mask image must be 8 bpp grayscale image. Mask must have the same size as the source image to get statistics for.

public ImageStatistics ( UnmanagedImage image, UnmanagedImage mask ) : System
image	UnmanagedImage	Image to gather statistics about.
mask	UnmanagedImage	Mask image which specifies areas to collect statistics for.
return	System

ImageStatistics() public method

Initializes a new instance of the ImageStatistics class.

The mask array must be of the same size as the specified source image, where 0 values correspond to areas which should be excluded from processing. So statistics is calculated only for pixels, which have none zero corresponding value in the mask.

Source pixel format is not supported. Mask must have the same size as the source image to get statistics for.

public ImageStatistics ( UnmanagedImage image, byte mask ) : System
image	UnmanagedImage	Image to gather statistics about.
mask	byte	Mask array which specifies areas to collect statistics for.
return	System