getting the pixel color of a coordinate on a movie

randy b's icon

Hi, I just need to get the color of the top-left pixel in a movie at different times so I can run it through a chroma keyer. I know this is probably really simple, but I can't figure it out. Thanks.

Wesley Smith's icon

send the getcell 0 0 message to a matrix object.

wes

On 11/6/06, randy wrote:
>
> Hi, I just need to get the color of the top-left pixel in a movie at different times so I can run it through a chroma keyer. I know this is probably really simple, but I can't figure it out. Thanks.
>

jml's icon

if you output the movie into a matrix, then you can use the [getcell 0 0] message on that matrix to extract the pixelinfo.

this should help...
but reading the tutorials and docs will help more.
jl

Andrew Benson's icon

Like so,

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