Use white color for virtual pixel on Motion blur

[josephs]

I have applied motioned blur (from right to left) on an image that is partially transparent (background none). The motion blur is applied just the way I like except for a the black color at the beginning edge of the blur. I understand that there is no pixels to blur...but how do I get ImageMagick to use white instead of black?

I was hopeful using "-virtual-pixel white" abut that had no effect.

I appreciate any help. Thank you.

https://drive.google.com/file/d/0Bz2HBB ... sp=sharing
https://drive.google.com/file/d/0Bz2HBB ... sp=sharing

[snibgo]

Please supply the command you used.

There are pixels to blur, but they are transparent-black. That is probably the problem. Try inserting "-background White -alpha Background" to make them transparent-white.

[josephs]

That worked! Thanks Snibgo!