The minimization of perceivable artifacts is a key goal in implementing a lossy compression algorithm. Uncompressed media (such as on Laserdiscs, Audio CDs, and WAV files) or losslessly compressed media (such as FLAC or PNG) do not suffer from compression artifacts. These compression artifacts appear when heavy compression is applied, and occur often in common digital media, such as DVDs, common computer file formats such as JPEG, MP3 and MPEG files, and some alternatives to the compact disc, such as Sony's MiniDisc format. The most common digital compression artifacts are DCT blocks, caused by the discrete cosine transform (DCT) compression algorithm used in many digital media standards, such as JPEG, MP3, and MPEG video file formats. The compression algorithm may not be intelligent enough to discriminate between distortions of little subjective importance and those objectionable to the user. If the compressor cannot store enough data in the compressed version, the result is a loss of quality, or introduction of artifacts. Lossy data compression involves discarding some of the media's data so that it becomes small enough to be stored within the desired disk space or transmitted ( streamed) within the available bandwidth (known as the data rate or bit rate). Original image, with good text edges and color grade Loss of edge clarity and tone "fuzziness" in heavy JPEG compressionĪ compression artifact (or artefact) is a noticeable distortion of media (including images, audio, and video) caused by the application of lossy compression. For other uses, see mosquito (disambiguation). For the anti-loitering technology, see The Mosquito.
Blog Post #5: Girls Just Want To Have Funįor my fifth and final meme blog post, I decided to examine the meme known as Idiot Nerd Girl."Mosquito noise" redirects here. The caption of the meme revolves around the lack of understanding towards a particular subject of “geek” culture.Īs a subset of the Advice Animals meme, Idiot Nerd Girl features a photo of teenage girl wearing thick-rimmed glasses and the word “NERD” written on the palm of her left hand set against a colour wheel background. There are no popular examples of this meme.Īccording to Know Your Meme, the meme first originated in 2010 when a version of the meme was “posted to the single-topic “Idiot Nerd Girl” Tumblr with the caption “Self-proclaimed title of ‘nerd’/ What is World of Warcraft?” (Know Your Meme, par. The meme began to spread and two years later it would have its own Facebook fan page and a gallery on the popular internet blog “Smosh” run by the popular YouTubers of the same name. This meme ultimately finds its beneficial aspects in how negative it is towards women.
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