Lossy compression and expansion algorithm for image representative dataA method for compressing and expanding source image representative data is disclosed. The method for compressing rasterized source image representative data comprises the following steps. The rasterized source image representative data is ...
JPEG 2000 (JP2) is the newest version of JPEG. It slightly improves image compression performance over JPEG using two different wavelet transforms. Users can choose low to high levels of compression. LZ77 Compression LZ77 compression is a lossless image compression meaning it maintains raster values ...
photosphotographyjpegencoderimagesdecoderlossycodecimage-compressionlossless-compression-algorithmlossless-imageslossy-compressionjxllossy-image-compressionlossless-image-compressionjpeg-xl UpdatedMay 15, 2025 C++ ComunidadAylas/PackSquash Star681 Code Issues ...
Lossy compressionis typically used when a file can afford to lose some data, and/or if storage space needs to be drastically ‘freed up’. Here, an algorithm scans image files and reduces their size by discarding information considered less important or undetectable to the human eye. ...
In present study, a block Karhunen-Lo猫ve Transform (KLT) based efficient lossy compression algorithm for optical remote sensing imagery is proposed. A Discrete Wavelet Transform (DWT) is performed on each band of the imagery to remove the spatial correlation. Each band of the imagery is ...
DCTZ is a lossy compression software for numeric datasets in double (or single) precision. It is based on a block decomposition mechanism combined with well-known discrete cosine transformation (DCT) on floating-point datasets. It also uses an adaptive quantization with two specific task-oriented ...
In order to solve the problem of mass GPS tracking data storage, this paper presented a lossy compression algorithm based on least square fitting method. The real GPS data were compressed and restored. The restored data and real data were compared. The results show that the compression ratio an...
Under the hood, SPERR uses wavelet transforms,SPECKcoding, and a custom outlier coding algorithm in its compression pipeline. This combination gives SPERR flexibility to compress targetting different quality controls, namely 1) bit-per-pixel (BPP), 2) peak signal-to-noise ratio (PSNR), and 3...
An algorithm for lossy compression of vector data (vector maps, vector graphics, contours of shapes) was developed. The algorithm is based on optimal polygonal approximation for error measure L2 and d 关键词: polygonal approximation quantization vector data compression vector data reduction vector map...
A method for lossy data compression, the method including receiving raw data at a storage device, receiving a request to compress flag, accessing an onboard data compression algorit