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By Data Juggler - 4 Years Ago
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I added some new grayscale features to my site https://pixeldatabase.net, so I made this video as a demo / tutorial.
The grayscale is real simple to use.
Update
Set Grayscale
There are also some optional parameters:
To use any of the optional parameters, just add it after Set Grayscale
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Set Grayscale Mean
The middle value of red, green or blue will be used to set the grayscale pixel value.
You can also use a where clause with the query, so only certain parts of an image are set to grayscale.
Update
Set Grayscale Red
Where
Total > 200
In the above query, only pixels whose total (red + green + blue) are greater than or equal to 200 will be set to grayscale, where all pixels matching that criteria are set to the red value.
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