Mask not working

[agriz]

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convert input.jpg mask.png -alpha Off -compose CopyOpacity -composite output.jpg

Why am i getting the input image as output?
Why am i not getting any mask applied on it?

Whatever the input and mask images are, it is returning input.jpg as output.jpg

[snibgo]

You are setting transparency of an image, then saving it as JPG, which can't store transparency.

[agriz]

I got it sir. After converting it to png, it works.


I am trying this effect.

Code: Select all

convert input.jpg ( -clone 0 mask.png -alpha off -gravity none -geometry +0+0 -compose copy_opacity -composite ) -delete 0 output.png
it works.

How do i create other slides?

convert input.jpg ( -clone 0 mask.png -alpha off -gravity none -geometry +0+0 -compose copy_opacity -composite ) ( -clone 0 mask.png -alpha off -gravity none -geometry +50+0 -compose copy_opacity -composite ) -delete 0 output.png

it is not working. 

[Bonzo]

I would probably crop the image into the separate sections, adding the white border and then place them on the canvas and finally add the drop shadow.

I do not see whay you need a mask or to alter the transparency.

This is some php code I wrote which may give you some ideas. It can be improved now as it was written quite a few years ago

[agriz]

Thank you for the advice sir. I will try as you advised. I will let you know what i got

[agriz]

Everything goes good according to use advice. I use +append to append the cropped images together. How do i position them? -gravity or -geometry is not working. Please advice

[snibgo]

There are many possible ways of doing this. When I look at the OP image, it seems to be a portrait that has been chopped into slices that have been rearranged. But it isn't. The are no discontinuities in the portrait at the boundaries between the slices.

So a possible solution is to take an ordinary image, then composite an image over it. That top image will contain a white border, four transparent sections, thin white lines between the transparent sections, and shadows.