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frame2im

Return image data associated with movie frame

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Syntax

RGB = frame2im(F)
[X,map] = frame2im(F)

Description

example

RGB= frame2im(F)returns the truecolor (RGB) image from the single movie frameF.

[X,map] = frame2im(F)returns the indexed image dataXand associated colormapmapfrom the single movie frameF.

Examples

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Open Script

Create a surface plot. The data tip gives the x-, y- and z-coordinate of points along the surface.

surf(peaks)

Usegetframeto capture the plot as a movie frame. The'colormap'field is empty, therefore the movie frame contains a truecolor (RGB) image.

F = getframe
F = struct with fields: cdata: [357x452x3 uint8] colormap: []

Convert the captured movie frame to image data.

RGB = frame2im(F);

Display the truecolor image. The data tip gives information about the column and row indices and RGB value of pixels.

figure imshow(RGB)

Input Arguments

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Movie frame, specified as a structure with two fields:

  • cdata— The image data stored as an array ofuint8values.

  • colormap— The colormap. If the movie frame contains a truecolor (RGB) images, then this field is empty ([]).

You can create a movie frame structure by using the functionsim2frameandgetframe.

Output Arguments

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Truecolor image, returned as anm-by-n-by-3 numeric array.

Data Types:uint8

Indexed image, returned as anm-by-nnumeric matrix.

Data Types:uint8

Colormap associated with indexed imageX,返回c-by-3 numeric matrix with values in the range [0, 1]. Each row ofmapis a three-element RGB triplet that specifies the red, green, and blue components of a single color of the colormap.

Data Types:double

Version History

Introduced before R2006a

See Also

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