| 主权项 |
1. A method performed by a computational device as part of transforming a source digital image into a digital object in a target digital image, the source digital image and the target digital image each comprising a plurality of pixels; the method comprising:
receiving and storing the source digital image in memory; receiving at a user interface an indication of an effect to be applied to said source digital image; obtaining a set of parameters based on the indication of the effect; obtaining a value defining a width of an area that borders at least one boundary of the digital object in the target digital image; the width of the area uniform along the at least one boundary of the digital object; for a pixel coordinate (xt,yt) of the target digital image that is within the area that borders the at least one boundary of the digital object, computing, using the pixel coordinate (xt,yt) of the target digital image and at least some of the parameters, a corresponding source pixel coordinate (xs,ys) that is within another area bordering the source digital image, said another area having a width that is non-uniform along a boundary of the source digital image; computing an alpha channel value defining semi-transparency of a pixel associated with the pixel coordinate (xt,yt) of the target digital image, the alpha channel value computed as a function of a location of the corresponding source pixel coordinate (xs,ys) in said another area bordering the source digital image. |
