Wavelet Foveation
نویسندگان
چکیده
منابع مشابه
Wavelet Foveation
A foveated image is a non-uniform resolution image whose resolution is highest at a point (fovea) but falling off away from the fovea. It can be obtained from a uniform image through a space-variant smoothing process, where the width of the smoothing function is small near the fovea and gradually expanding as the distance from the fovea increases. We treat this process as an integral operator a...
متن کاملAuthentication of Volume Data Using Wavelet-Based Foveation
3D volume data has been increasingly used in many applications. The digital nature of the data allows easy creation, copying and distribution. However, it also allows ease of manipulation which can enable wilful or inadvertent misrepresentation of the content. For an application like medical imaging, this can have serious diagnostic and legal implications. Thus there is a strong need to establi...
متن کاملStereo Foveation
The human visual system (HVS) is a complex biological system, which executes a number of highly demanding tasks in real time. The complexity of this system may be better appreciated if we quote the following facts: Visual intelligence occupies almost half of your brain’s cortex (Hoffman, 2000), 70% of all receptors, 40+% of cortex and 4 billion neurons are dedicated to vision and we can see muc...
متن کاملA Perceptually Optimized Foveation Based Wavelet Embedded Zero Tree Image Coding
In this paper, we propose a Perceptually Optimized Foveation based Embedded ZeroTree Image Coder (POEFIC) that introduces a perceptual weighting to wavelet coefficients prior to control SPIHT encoding algorithm in order to reach a targeted bit rate with a perceptual quality improvement with respect to a given bit rate a fixation point which determines the region of interest ROI. The paper also,...
متن کاملEmbedded foveation image coding
The human visual system (HVS) is highly space-variant in sampling, coding, processing, and understanding. The spatial resolution of the HVS is highest around the point of fixation (foveation point) and decreases rapidly with increasing eccentricity. By taking advantage of this fact, it is possible to remove considerable high-frequency information redundancy from the peripheral regions and still...
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: Applied and Computational Harmonic Analysis
سال: 2000
ISSN: 1063-5203
DOI: 10.1006/acha.2000.0324