I. Overview of the JPEG principle
Second, the JPEG principle detailed analysis and the compression algorithm process
1. Color model Conversion (color models)
2. DCT (discrete cosine Transform discrete cosine transform)
3.
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, JPEG
(1) technical supportGIF NLPGIF (Graphics Interchange Format; animated cross-border format) is the specification that CompuServe uses to define a general color image (color Raster image: under the constraints of the original creator and the
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A. JPEG compression process
JPEG compression is implemented in four steps:
1. Color mode conversion and sampling;
2.DCT transform;
3. Quantification;
4. Code.
Two.
1. Color mode conversion and sampling RGB color system is our most common way of
Picture compression is how important, perhaps many people may not have an intuitive understanding, for example, a 800x800 size of ordinary pictures, if not compressed, probably around 1.7MB, this volume if the text file is enough to save a 920,000
Android ImageView does not display JPEG images and how to reference image resources in Android Studio,
Android ImageView does not display JPEG images
I am writing a small instance today. ImageView is set to INVISIBLE in xml, and it needs to be set
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