The recent video coding standard H.264/AVC show extremely higher coding efficiency compare to any other previous standards. H.264/AVC can achieve over 50% of bit rate saving with same quality using the rate-distortion...
详细信息
The recent video coding standard H.264/AVC show extremely higher coding efficiency compare to any other previous standards. H.264/AVC can achieve over 50% of bit rate saving with same quality using the rate-distortion process, but it brings high computational complexity. In this paper, we propose an algorithm that can reduce the complexity of the codec by reducing the block mode decision process adaptively. Block mode decision process in H.264/AVC consists of inter mode decision process and intra mode decision process. We deal with reduction method for inter and intra mode decision. In this paper an efficient method is proposed to reduce the inter mode decision complexity using the direct prediction methods based on block correlation and adaptive rate distortion cost threshold for early stopping. The fast intra mode reduction algorithm based on inter mode information is also proposed to reduce the computational complexity. The experimental results show that the proposed algorithm can achieve up to 63.34-77.39% speed up ratio with a little PSNR loss. Increment in bit requirement is also not much noticeable. (c) 2007 Elsevier Inc. All rights reserved.
Creating complex agents for simulation environments has long been the exclusive realm of AI experts. However it is far more desirable that experts in the particular application domain, rather than AI experts, are empo...
详细信息
Vertical Take-Off and Landing (VTOL) capable Mini Unmanned Aerial Vehicles (MUAV) are an economic alternative to real helicopters if local aerial pictures or other aerial measurements are needed. With electronic stabi...
详细信息
This tutorial is concerned with various aspects of model-based design of hardware/software architectures of automotive systems. It will be split into three parts, the first dealing with model-based analysis of automot...
详细信息
ISBN:
(纸本)9781605589046
This tutorial is concerned with various aspects of model-based design of hardware/software architectures of automotive systems. It will be split into three parts, the first dealing with model-based analysis of automotive ECU networks, the second with synthesis of schedules for such networks, and finally the third with model-based testing of such architectures.
A fuzzy control approach is proposed for controlling a mobile robot by effectively using the static knowledge of a partially-known environment and the dynamic sensor data. To describe the global structure of the stati...
详细信息
A fuzzy control approach is proposed for controlling a mobile robot by effectively using the static knowledge of a partially-known environment and the dynamic sensor data. To describe the global structure of the static environment, a tangent-graph is first constructed and a sequence of subgoals is generated for guiding the global path direction. During the execution of these subgoals, a motion executor using the concept of fuzzy control evaluates the sensor data and the robot current status, and adjusts the moving speed and direction of the robot.< >
Medical and medication devices are real-timesystems with safety and timing requirements. They range from hard-real-time, embedded, and reactive systems such as pacemakers to soft-real-time, standalone medication disp...
详细信息
In manufacturing it is often necessary to orient parts prior to packing or assembly. We say that a planar part is polygonal if its convex hull is a polygon. We consider the following problem: given a list of n vertice...
详细信息
In manufacturing it is often necessary to orient parts prior to packing or assembly. We say that a planar part is polygonal if its convex hull is a polygon. We consider the following problem: given a list of n vertices describing a polygonal part whose initial orientation is unknown, find the shortest sequence of mechanical gripper actions that is guaranteed to orient the part up to symmetry in its convex hull. We show that such a sequence exists for any polygonal part by giving an O(n2 log n) algorithm for finding the sequence. Since the gripper actions do not require feedback, this result implies that any polygonal part can be oriented without sensors.
The evaluation of communication latency in multiprocessor platforms requires the profiling of the application, the description of the architecture of the platform and of the mapping of application tasks onto processin...
详细信息
Animal behavior researchers often face problems regarding standardization and reproducibility oftheir experiments. This has led to the partial substitution of live animals with artificial virtual stim-uli. In addition...
详细信息
Animal behavior researchers often face problems regarding standardization and reproducibility oftheir experiments. This has led to the partial substitution of live animals with artificial virtual stim-uli. In addition to standardization and reproducibility, virtual stimuli open new options for re-searchers since they are easily changeable in morphology and appearance, and their behavior canbe defined. In this article, a novel toolchain to conduct behavior experiments with fish is presentedby a case study in sailfin mollies Poecilia latipinna. As the toolchain holds many different and novelfeatures, it offers new possibilities for studies in behavioral animal research and promotes thestandardization of experiments. The presented method includes options to design, animate, andpresent virtual stimuli to live fish. The designing tool offers an easy and user-friendly way to definesize, coloration, and morphology of stimuli and moreover it is able to configure virtual stimuli ran-domly without any user influence. Furthermore, the toolchain brings a novel method to animatestimuli in a semiautomatic way with the help of a game controller. These created swimming pathscan be applied to different stimuli in realtime. A presentation tool combines models and swim-ming paths regarding formerly defined playlists, and presents the stimuli onto 2 *** with live sailfin mollies validated the usage of the created virtual 3D fish models inmate-choice experiments.
In this paper, an approach is presented for designing a robot controller to integrate path planning and motion execution. Instead of following an exactly planned geometric path, which cannot be easily modified to deal...
详细信息
In this paper, an approach is presented for designing a robot controller to integrate path planning and motion execution. Instead of following an exactly planned geometric path, which cannot be easily modified to deal with uncertainties, a robot realizes its motion under the guidance of a sequence of grossly selected crucial points called subgoals. A fuzzy model is used for on-line controlling the robot to pass through the subgoals smoothly. With the help of heuristics for optimal motion control, the rule base can be developed. Such a concept provides a control method in realtime as well as a possibility of integrating sensor data for the subgoal-guided motion.< >
暂无评论