Fractional Directional Differentiation and Its Application for Multiscale Texture Enhancement
نویسندگان
چکیده
منابع مشابه
Fractional Directional Differentiation and Its Application for Multiscale Texture Enhancement
This paper derives the directional derivative expression of Taylor formula for two-variable function from Taylor formula of one-variable function. Further, it proposes a new concept, fractional directional differentiation FDD , and corresponding theories. To achieve the numerical calculation, the paper deduces power series expression of FDD. Moreover, the paper discusses the construction of FDD...
متن کاملMultiscale Texture Enhancement
The ideas of texture analysis by means of the structure tensor are combined with the scale-space concept of anisotropic diiusion ltering. In contrast to many other nonlinear diiusion techniques, the proposed one uses a diiusion tensor instead of a scalar diiusivity. This allows true anisotropic behaviour. The preferred diiusion direction is determined according to the phase angle of the structu...
متن کاملUser Constrained Multiscale MRF Model for Texture Mixture Synthesis and its Application to Texture Replacement
The original multiscale MRF texture model proposed by Paget (IEEE Transactions on Image Processing, 1998, page 925-931) can be used to synthesize a broad range of textures but is limited to taking a single input texture and outputting a homogeneous texture similar to the input. This is insufficient for textures that have combined visual characteristics from several different sources. To address...
متن کاملTexture Enhancement for Medical Images Based on Fractional Differential Masks
Texture enhancement for medical images is the most important technique in medical image diagnosis. This paper introduces a texture enhancement technique for medical images by using fractional differential (FD) masks based on Srivastava-Owa fractional operators. We also construct a 2D isotropic gradient mask based on generalized fractional operators. Texture enhancement performance is measured b...
متن کاملA lapped directional transform for spectral image analysis and its application to restoration and enhancement
We describe a new real-valued lapped transform for 2D-signal and image processing. Lapped transforms are particuiarly useful in block-based processing, since their overlapping basis functions reduce or prevent block artifacts. Our transform is derived from the moduiated lapped transform (MLT), which is a real-valued and separable transform. Like the discrete cosine transform, the MLT does not a...
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: Mathematical Problems in Engineering
سال: 2012
ISSN: 1024-123X,1563-5147
DOI: 10.1155/2012/325785