getparamfromfrm2pix
Get frame format parameters
Description
[
returns
video format parameters from a activePixelsPerLine
,activeLines
,numPixelsPerFrame
]
= getparamfromfrm2pix(frm2pix
)visionhdl.FrameToPixels
System object™.
Examples
Configure Pixel Stream Format
When you choose a standard video format for visionhdl.FrameToPixels
, the object computes the frame dimensions. To access these values, call the getparamfromfrm2pix
function.
frm2pix = visionhdl.FrameToPixels(... 'NumComponents',1,... 'VideoFormat','240p'); [activePixels,activeLines,numPixelsPerFrame] = getparamfromfrm2pix(frm2pix)
activePixels = 320
activeLines = 240
numPixelsPerFrame = 130248
Note that numPixelsPerFrame
includes both active and inactive regions of the frame.
Input Arguments
frm2pix
— Video serializer
visionhdl.FrameToPixels
System object
The visionhdl.FrameToPixels
object converts
framed video to a stream of pixel values and control signals. It contains
useful parameters regarding the video format.
Output Arguments
activePixelsPerLine
— Number of pixels in a horizontal line of the active video frame
positive integer
Number of pixels in a horizontal line of the active video frame, returned as a positive integer.
For custom video formats, this value corresponds to the ActivePixelsPerLine
property
of the frm2pix
object.
activeLines
— Number of horizontal lines in the active video frame
positive integer
Number of horizontal lines in the active video frame, returned as a positive integer.
For custom video formats, this value corresponds to the ActiveVideoLines
property
of the frm2pix
object.
numPixelsPerFrame
— Number of active and inactive pixels in the video frame
positive integer
Number of active and inactive pixels in the video frame, returned as a positive integer.
For custom video formats, this value corresponds to the product
of the TotalVideoLines
and TotalPixelsPerLine
properties
of the frm2pix
object.
Version History
Introduced in R2015a
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