Interest in multiresolution techniques for signal processing and analysis is increasing steadily. An important instance of such a technique is the so-called pyramid decomposition scheme. This report proposes a general axiomatic pyramid decomposition scheme for signal analysis and synthesis. This scheme comprises the following ingredients: (i) the pyramid consists of a (finite or infinite) numbe...

Cervical cancer is one of the most common types of cancer in women worldwide. Most deaths due to the disease occur in less developed areas of the world. In this work, we introduce a new image dataset along with expert annotated diagnoses for evaluating image-based cervical disease classification algorithms. A large number of Cervigram® images are selected from a database provided by the US Nati...

Spatio-temporal resolution pyramids are well suited for scalable video codecs. An oversampled pyramid decomposition can be incorporated eeciently into either open-loop or closed-loop pyramid encoders. In this paper, we discuss two diierent motion compensation (MC) techniques suitable for open-loop as well as for closed-loop pyramid coders. We compare the performance of each technique to both py...

In routing, a source vertex sends a message to a target vertex and the routing algorithm decides a path from the source vertex to the target vertex. In 2013, Wang and Juan proposed a simple version of the WK-recursive pyramid networks, is called the basic WK-recursive pyramid network, which have received much attention recently. There are many literatures that study on this topology. This paper...

Multi-resolution techniques have been used in a wide range of vision applications. Unfortunately, the costly operation of building a proper pyramid strongly reduces its value as a tool for reducing computational cost. A new approach, physical panoramic pyramid, is introduced in this paper. Physical panoramic pyramid measures multiple resolutions simultaneously resulting in multi-resolution pano...

Interest in multiresolution techniques for signal processing and analysis is increasing steadily. An important instance of such a technique is the so-called pyramid decomposition scheme. This report proposes a general axiomatic pyramid decomposition scheme for signal analysis and synthesis. This scheme comprises the following ingredients: (i) the pyramid consists of a ((nite or innnite) number ...

A mirror pyramid consists of a set of flat mirror faces arranged around an axis of symmetry, inclined to form a pyramid. By strategically positioning a number of conventional cameras around a mirror pyramid, the viewpoints for the individual cameras’ mirror images can be colocated at a single point within the pyramid, effectively forming a virtual camera with a wide field of view. Mirror pyrami...

We propose a new type of wave-front sensor (WFS) derived from the pyramid WFS (PWFS). This new WFS, called the flattened pyramid-WFS (FPWFS), has a reduced pyramid angle in order to optically overlap the four pupil images into an unique intensity. This map is then used to derive the phase information. In this Letter, this new WFS is compared to three existing WFSs, namely the PWFS, the modulate...

A low entropy pyramidal image data structure suited for lossless coding and progressive transmission is proposed in this work. The new coder, called the progressively predictive pyramid (PPP) is based on the well-known Laplacian pyramid. By introducing inter-resolution predictors into the original Laplacian pyramid, we show that the entropy level in the original pyramid can be reduced significa...

A new class of algorithms for image decomposition, named Inverse Pyramid Decomposition (IPD), is explored in this work. The algorithms of this class, developed and analyzed in the present work, are based on image approximation in the pyramid levels with a set of models. The algorithm for pyramid decomposition, known as Reduced Difference Pyramid (RDP) [2], which is the closest of the same class...