Page 213 - DCAP504_Computer Graphics
P. 213
Computer Graphics
The following figure 13.16 gives a better idea about forward mapping, where the pixels from the source
image are mapped onto the pixels in the destination image.
Figure 13.16: Forward Mapping
Source: http://www.cs.virginia.edu/~gfx/courses/2004/Intro.Fall.04/handouts/03-morph.pdf
The following figure 13.17 depicts how the pixels in the source image appear when rotated at an angle
of -30 degree in forward mapping.
Figure 13.17: Forward Mapping
Source: http://www.cs.virginia.edu/~gfx/courses/2004/Intro.Fall.04/handouts/03-morph.pdf
2. Reverse Mapping: The reverse mapping method involves mapping each pixel in the destination
image and sampling an appropriate source image. This assures mapping of all the destination
image pixels to the source image pixel. Beier/Neely line morphing method uses this method of
morphing.
206 LOVELY PROFESSIONAL UNIVERSITY
