Results 21 to 30 of about 149,057 (262)
Compression of Khalimsky topological spaces
Filomat, 2012 Aiming at the study of the compression of Khalimsky topological spaces which is an interesting field in digital geometry and computer science, the present paper develops a new homotopy thinning suitable for the work. Since Khalimsky continuity of maps between Khalimsky topological spaces has some limitations of performing a discrete ...
Min Kang, Sang-Eon Han
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Компьютерная оптика, 2021 This paper describes the use of some color spaces in JPEG image compression algorithm and their impact in terms of image quality and compression ratio, and then proposes adaptive color space models (ACSM) to improve the performance of lossy image ...
S. Madenda, A. Darmayantie
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Compression of uniform embeddings into Hilbert space
Topology and its Applications, 2008 If one tries to embed a metric space uniformly in Hilbert space, how close to quasi-isometric could the embedding be? We answer this question for finite dimensional CAT(0) cube complexes and for hyperbolic groups. In particular, we show that the Hilbert space compression of any hyperbolic group is 1.
Brodskiy, N., Sonkin, D.
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Lossless compression for laser additive manufacturing using continuous rows compressed storage [PDF]
Journal of Intelligent Manufacturing and Special EquipmentPurpose – The layer section of laser additive manufacturing (AM) can be rasterized. Subsequently, the rasterized layer section can be converted into sparse matrix. However, large storage space is occupied due to the high manufacturing resolution.
Mingyu Gao +3 more
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Compression of auditory space during rapid head turns [PDF]
Proceedings of the National Academy of Sciences, 2008 Studies of spatial perception during visual saccades have demonstrated compressions of visual space around the saccade target. Here we psychophysically investigated perception of auditory space during rapid head turns, focusing on the “perisaccadic” interval.
Johahn, Leung +2 more
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Lossless Data Compression for Time-Series Sensor Data Based on Dynamic Bit Packing
Sensors, 2023 In this paper, we propose a bit depth compression (BDC) technique, which performs bit packing by dynamically determining the pack size based on the pattern of the bit depth level of the sensor data, thereby maximally reducing the space wastage that may ...
Sang-Ho Hwang +3 more
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Wavelet-based space-frequency compression of ultrasound images [PDF]
IEEE Transactions on Information Technology in Biomedicine, 2001 This paper describes the compression of grayscale medical ultrasound images using a recent compression technique, i.e., space-frequency segmentation (SFS). This method finds the rate-distortion optimal representation of an image from a large set of possible space-frequency partitions and quantizer combinations and is especially effective when the ...
E, Chiu, J, Vaisey, M S, Atkins
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Vessel AIS Trajectory Online Compression Based on Scan-Pick-Move Algorithm Added Sliding Window
IEEE Access, 2020 The trajectory data of vessel AIS (automatic identification system) has important theoretical and application value for information supporting decisions. However, large sizes lead to difficulties in storing, querying, and processing.
Shuang Sun +3 more
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Hilbert space compression and exactness of discrete groups
Journal of Functional Analysis, 2005 14 ...
Campbell, Sarah, Niblo, Graham A.
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A Multiresolution Vector Data Compression Algorithm Based on Space Division
ISPRS International Journal of Geo-Information, 2020 Vector data compression can significantly improve efficiency of geospatial data management, visualization and data transmission over internet. Existing compression methods are either based on information theory for lossless compression mainly or based on
Dongge Liu +5 more
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