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01:26Frames: Problem Solving II
Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.
01:24Frames: Problem Solving I
Consider a jib crane with an external load suspended from the pulley. The dimensions of the crane members are shown in the figure. A systematic analysis of the frame structure is required to determine the reaction forces at the pin joints, assuming that the pulleys are frictionless.
01:30Buffers: Overview
Buffers play a crucial role in stabilizing the pH of a solution by mitigating the effects of small amounts of added acid or base. They consist of a weak acid and its conjugate base or a weak base and its conjugate acid. A solution of acetic acid and sodium acetate is an example of a buffer that consists of a weak acid and its salt: CH3COOH (aq) + CH3COONa (aq). An example of a buffer that consists of a weak base and its salt is a solution of ammonia and ammonium chloride: NH3 (aq) + NH4Cl (aq).
01:20Stream Function
In two-dimensional incompressible fluid flow, the continuity equation is essential for ensuring mass conservation, meaning that any change in fluid entering or exiting a region is balanced by a corresponding change elsewhere. For incompressible flow, where density remains constant, this requirement simplifies to the condition that the divergence of the velocity field must be zero. Mathematically, this is expressed as,
01:30Frames
Frames are essential components of various mechanical and structural systems used daily. These structures are known for their stability and ability to bear heavy loads. A frame is constructed using two-force and multi-force members, interconnected using pin joints. In contrast, trusses are made entirely of two-force members.
Frames are versatile and widely used in various applications such as structural supports for beams and columns, automobile chassis construction, and in the construction...
Frames are versatile and widely used in various applications such as structural supports for beams and columns, automobile chassis construction, and in the construction...
01:27Uniform Depth Channel Flow
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
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Related Experiment Video
Updated: Jun 9, 2026
11:34
High-resolution, High-speed, Three-dimensional Video Imaging with Digital Fringe Projection Techniques
Published on: December 3, 2013
Interactive streaming of stored multiview video using redundant frame structures.
Gene Cheung1, Antonio Ortega, Ngai-Man Cheung
1National Institute of Informatics, Tokyo 101-8430, Japan. cheung@nii.ac.jp
Summary
This study introduces a novel frame structure for interactive multiview streaming, optimizing view switching for smoother playback. The new method enhances bandwidth efficiency by up to 45% compared to traditional approaches.
Area of Science:
- Computer Science
- Electrical Engineering
- Multimedia Systems
Background:
- Multiview video coding traditionally prioritizes rate-distortion for storage and non-interactive delivery.
- Interactive streaming requires efficient view switching without interrupting playback.
- Standard random access methods like I-frame insertion are bandwidth-inefficient for interactive applications.
Purpose of the Study:
- To design a frame structure enabling seamless interactive multiview streaming with efficient view switching.
- To develop methods for encoding frames that balance transmission rate and storage costs for view switching.
- To optimize frame structures for various view-switching probabilities.
Main Methods:
- Proposing a redundant frame representation for I-, P-, and "merge" frames.
- Developing ad hoc frame structures for extreme view-switching probabilities (very high or very low).
- Implementing optimization algorithms for general frame structures across diverse scenarios.
Main Results:
- Generated redundant frame structures offer a spectrum of transmission rate versus storage trade-offs.
- Achieved up to 45% improvement in bandwidth efficiency compared to simple I-frame insertion methods.
- Demonstrated effective performance across different view-switching probability scenarios.
Conclusions:
- The proposed redundant frame structure significantly enhances bandwidth efficiency for interactive multiview streaming.
- The optimization algorithms provide flexible solutions for balancing transmission and storage costs.
- This approach facilitates uninterrupted temporal playback during interactive view switching.