lejos.hardware.video

Class YUYVImage

java.lang.Object

lejos.hardware.video.YUYVImage

public class YUYVImage
extends java.lang.Object

Class to represent a YUV video image

Author:

Gabriel Ferrer, Andy

Constructor Summary

Constructors

Constructor and Description
YUYVImage(byte[] pix, int width, int height) Create a YUYV image of the requested size using the byte array as the source of pixel information
YUYVImage(int width, int height) Create a new YUYV image of the specified size

Method Summary

Modifier and Type	Method and Description
void	display(GraphicsLCD device, int xDest, int yDest, int threshold) Display the image at the specified location on the provided monochrome device or image.
int	getHeight() return the image height
int	getMeanY() Return the mean of the Y components for the image (mean brightness)
int	getNumPixels() return the number of pixels in the image
int	getU(int x, int y) return the U component of the specified pixel
int	getV(int x, int y) return the V component of the specified pixel
int	getWidth() return the image width
int	getY(int x, int y) return the Y component of the specified pixel

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

YUYVImage

public YUYVImage(byte[] pix,
                 int width,
                 int height)

Create a YUYV image of the requested size using the byte array as the source of pixel information

Parameters:

pix - pixels

width - image width

height - image height

YUYVImage

public YUYVImage(int width,
                 int height)

Create a new YUYV image of the specified size

Parameters:

width -

height -

Method Detail

getNumPixels

public int getNumPixels()

return the number of pixels in the image

Returns:

number of pixels

getWidth

public int getWidth()

return the image width

Returns:

width

getHeight

public int getHeight()

return the image height

Returns:

height

getY

public int getY(int x,
                int y)

return the Y component of the specified pixel

Parameters:

x -

y -

Returns:

Y component

getU

public int getU(int x,
                int y)

return the U component of the specified pixel

Parameters:

x -

y -

Returns:

U component

getV

public int getV(int x,
                int y)

return the V component of the specified pixel

Parameters:

x -

y -

Returns:

V component

getMeanY

public int getMeanY()

Return the mean of the Y components for the image (mean brightness)

Returns:

mean Y value

display

public void display(GraphicsLCD device,
                    int xDest,
                    int yDest,
                    int threshold)

Display the image at the specified location on the provided monochrome device or image. Pixels with a Y value below threshold will be set, those above unset.

Parameters:

threshold -