Related Experiment Video
Updated: Apr 30, 2026
07:32
Measurement of Vibration Detection Threshold and Tactile Spatial Acuity in Human Subjects
Published on: September 1, 2016
12.2K
Lossy data compression of vibrotactile material-like textures
IEEE Transactions on Haptics
|May 9, 2014
Summary
Lossy compression effectively reduces vibrotactile texture data size for internet delivery. Quantization and threshold-based truncation significantly decrease file size without compromising perceived quality.
Area of Science:
- Haptic technology
- Digital signal processing
- Human-computer interaction
Background:
- Internet delivery of tactile content, specifically vibrotactile material-like textures, is emerging.
- Reducing the data size of these textures is crucial for efficient online transmission.
Purpose of the Study:
- To investigate effective lossy compression strategies for vibrotactile texture data.
- To assess the impact of compression on data size and perceived quality.
Main Methods:
- Applied quantization of amplitude spectra in 14 steps.
- Implemented truncation of frequency components below a shifted perceptual threshold.
- Combined lossy compression with Huffman coding (lossless compression).
Main Results:
- Quantization reduced data size to approximately one quarter with no noticeable quality loss.
- Threshold-based truncation proved effective and preferable to automatic deletion.
- Combined methods reduced data size to 10-20% of original size.
Conclusions:
- Lossy compression strategies, including quantization and threshold-based truncation, are effective for vibrotactile textures.
- These algorithms significantly decrease data size without substantial quality degradation.
- Optimized data compression will facilitate the online delivery of rich tactile experiences.
Related Concept Videos
01:25Shape and Texture of Coarse Aggregate
1.3K
Aggregate shape is classified based on the relative sharpness or roundness of the edges and corners. This classification includes categories like rounded, angular, elongated, and flaky, each with specific characteristics. Rounded aggregates, fully shaped by attrition, are typical of river or seashore gravel, while angular aggregates, such as crushed rock, have well-defined edges. Aggregates that are elongated and flaky are less desirable, as they can reduce the workability and strength of...
1.3K
01:17Sound as Pressure Waves
3.4K
Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...
The pressure fluctuation depends on the difference in displacements between the successive points in the...
3.4K
01:01Perception of Sound Waves
4.7K
The human ear is not equally sensitive to all frequencies in the audible range. It may perceive sound waves with the same pressure but different frequencies as having different loudness. Moreover, the perception of sound waves depends on the health of an individual's ears, which decays with age. The health of one's ears may also be affected by regular exposure to loud noises.
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
The pitch of a sound depends on the frequency and the pressure amplitude of the source. Two sounds of the same...
4.7K
01:17Convolution Properties II
752
The important convolution properties include width, area, differentiation, and integration properties.
The width property indicates that if the durations of input signals are T1 and T2, then the width of the output response equals the sum of both durations, irrespective of the shapes of the two functions. For instance, convolving two rectangular pulses with durations of 2 seconds and 1 second results in a function with a width of 3 seconds.
The area property asserts that the area under the...
The width property indicates that if the durations of input signals are T1 and T2, then the width of the output response equals the sum of both durations, irrespective of the shapes of the two functions. For instance, convolving two rectangular pulses with durations of 2 seconds and 1 second results in a function with a width of 3 seconds.
The area property asserts that the area under the...
752
00:53Sound Intensity Level
4.0K
Humans perceive sound by hearing. The human ear helps sound waves reach the brain, which then interprets the waves and creates the perception of hearing. The loudness of the environment in which a person is located determines whether they can distinguish between different sound sources.
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
The human ear can perceive an extensive range of sound intensity, necessitating the use of the logarithmic scale to define a physical quantity—the intensity level. It is a ratio of two intensities and...
4.0K
01:11Relative Velocity in Two Dimensions
7.0K
Relative velocity is the velocity of an object as observed from a particular reference frame, or the velocity of one reference frame with respect to another reference frame. The concept of relative velocity can be used to describe motion in two dimensions. Consider a particle P and two reference frames S and S′. The position of the origin of S′ as measured in S is , the position of P as measured in S′ is , and the position of P as measured in S is , which can be evaluated by...
7.0K