Shanghai Provincial Standard of the People's Republic of China
Latest
DB31/T 1066-2017
Scope
This standard is a guiding technical document that provides users with a lossless compression algorithm with high compression ratio and four-value (four-color) characteristics for Chinese text documents, electronic forms, digital vouchers, etc. Combine it with bitmap image file formats such as TIFF and BMP to generate a new electronic document without intellectual property barriers. This standard applies to the generation and archiving of four-value electronic documents for e-government and e-commerce in Shanghai.
DB31/T 1066-2017 history
2017DB31/T 1066-2017 Four-valued Image Compression Algorithm for Electronic Documents