Fractal coding based on image local fractal dimension
نویسندگان
چکیده
منابع مشابه
Fractal coding based on image local fractal dimension
Fractal codification of images is based on self-similar and self-affine sets. The codification process consists of construction of an operator which will represent the image to be encoded. If a complicated picture can be represented by an operator then it will be transmitted or stored very efficiently. Clearly, this has many applications on data compression. The great disadvantage of the automa...
متن کاملUsing Adaptive Contraction for Fractal Image Coding based on Local Fractal Dimension
. In automatic fractal image compression, most of the encoding time is spent on finding the best match between each range block and the domain blocks. We propose the use of the local complexity of the image domain blocks to reduce the number of pairs to be tested on this search. Indexing the contracted domain pools according to their local fractal dimension and using multiple contraction factor...
متن کاملUnsupervised Color Image Segmentation Based on Local Fractal Dimension
This paper proposes an improved version for the JSEG color image segmentation algorithm, combining the classical JSEG algorithm with a local fractal operator that measures the fractal dimension of each pixel, thus improving the boundary detection. Furthermore, the sensitivity of color variation is enhanced when working with the original color value, instead of quantized color information. Exper...
متن کاملImprovement on Fractal Image Coding Based on the Difference Image
In this paper, we propose an enhanced Fractal Image Compression (FIC) approach. In this method, the original image is represented by a provisional image and a difference image, which records the difference between the original and provisional image. With the less number of domain blocks required to do the best match search, the encoding time can be reduced by about 30% with a tolerance loss in ...
متن کاملFractal Image Coding
This paper investigates the use of fractal coding for image compression and reconstruction. The encoder exploits self-similarity of the image at different resolutions, mapping larger blocks of the image to similar smaller blocks through a series of contractive transformations. The decoder can apply these transformations iteratively to any image, and recover the original. We show that varying th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Clinics
سال: 2005
ISSN: 1807-0302
DOI: 10.1590/s1807-03022005000100005