Resize, nudge upwards and apply partial gradient

[Win7]

Hi I would like to crop and resize an image, nudge it upward (north) 25 pixels, then apply a black-to-transparent gradient starting 25 pixels from the bottom and fading upward 30 pixels.

Example of final output:



I already have the crop and resize part working, and would like to add on the other steps:

Code: Select all

convert.exe OrigFile -resize 800 -gravity south -crop 800x533+0+0 +repage OutputFile1

Would appreciate your help.

Thank you.

[snibgo]

... a black-to-transparent gradient starting 25 pixels from the bottom and fading upward 30 pixels.

You could build this in three pieces, then compose that over the input.

Code: Select all

convert -size 800x30 gradient: -gravity South -extent 800x478 -gravity North -background Black -extent 800x533 ( -clone 0 -negate ) -compose CopyOpacity -composite g.png

(There may be a better way.)

nudge it upward (north) 25 pixels

What does that mean? Do you want to trim 25 pixels from the top?

[Win7]

Hi snibgo, thanks, I will test it out.