| Summary: | 碩士 === 國立成功大學 === 電機工程研究所 === 83 === In the traditional film production, the limitations of time and
space will cost the film production more and lavishly. If the
snapshot of actors and playgrounds can be separated, these
problem can be solved by digital image composition effectively.
In this thesis, we propose an image composition system ,that
includes object-only shooting procedures, composition rules of
images and compression method of object image. We separate the
object image from the object-only shooting image by using the
characteristics of background and adjust the parameter of
object image by the characteristics of luminosity. Since object
images are irregular, traditional methods are not suitable for
compressions. By referring the direction of im- age texture of
blocks, we employ the direction-oriented 1D-DCT to compress the
irregular object image. By using the direction mation, we can
modify the 3-step motion estimation algorithm to reduce the
searching time and compensated errors.
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