Pixel Control Structure

Vision HDL Toolbox™ System objects use a structure data type for control signals associated with serial pixel data. The structure contains five logical signals indicating the validity of a pixel and its location within a frame. You can easily pass the data and control output arguments of one Vision HDL Toolbox System object™ as the input arguments to another Vision HDL Toolbox System object, because the objects use this structure for input and output control signal arguments. To convert an image into a pixel stream and control signals, use the visionhdl.FrameToPixels System object.

Signal	Description	Data Type
`hStart`	`true` for the first pixel in a horizontal line of a frame	`logical`
`hEnd`	`true` for the last pixel in a horizontal line of a frame	`logical`
`vStart`	`true` for the first pixel in the first (top) line of a frame	`logical`
`vEnd`	`true` for the last pixel in the last (bottom) line of a frame	`logical`
`valid`	`true` for any valid pixel	`logical`

Pixel Control Structure

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