将人脸图像压缩为二维码对人脸识别准确率的影响 大小 1KB.pdf

1、1STORAGE OF INTEROPERABLE FACE STORAGE OF INTEROPERABLE FACE IMAGERY ON 2D BAR CODESIMAGERY ON 2D BAR CODESPATRICK GROTHERPATRICK GROTHERIFPC 2025IFPC 2025-0404-0303ISO/IEC 18004:2024 QR codeISO/IEC 16022:2024 Data MatrixISO/IEC 24778:2024 Aztec code2STANDARDIZED vs.PROPRIETARY PAYLOADS0100111101101

2、0100101010010101010101010100001 01001111011010100101010010101010101010100001.I:STANDARD IMAGE ENCODER e.g.JPEGJ:STANDARD IMAGE DECODER e.g.JPEGA:CROP,RESIZE,COMPRESSQ:STANDARD QR EN-and DE-CODER01101010010101001010101010101010000111111010 01101010010101001010101010101010000111111010.U:PROPRIETARY FA

3、CE IMAGE ENCODERV:PROPRIETARY FACE IMAGE DECODER01101010010101001010101010101010000111111010 Q:STANDARD QR EN-and DE-CODERX:PROPRIETARY TEMPLATE ENCODERMATCHINGNO IMAGE!3CHAIN OF PROCESSING-ENCODING1:COLLECT ISO/ICAO2:DETECT3:SPECIFY ROI4:CROP5:RESIZE6:COMPRESS011010100101010010101010101010100001111

4、11010 7.QR ENCODEPRIVATE KEYBINARY COMPRESSED BUFFERQR CODE CONTAINING SIGNATURE+IMAGE+ERROR-CORRECTION4NIST ROLE:PART I:SURVEY OPEN METHODS ROI Specification:0%,10%,20%crop margin In-plane rotation:Yes,No Anti-alias prefilter:LPF,Blur kernel Resizing method:Bicubic,Lanczos,Target width:64,80,96,128

5、 Color:24 bit,Luminance-only,8 bit RGB 332,Compressor:JPEG,JPEG-LI,JPEG-2000,WEBP,HEIC,5TARGET FILE SIZE:1200 BYTESJPG:87x1091169 bytes HEIC:160 x2001164 bytesORIG:160 x20041579 bytesWEBP:160 x2001198 bytesJPG-LI:160 x2001201 bytesBackwards compatible with JPEG so fully interoperable w installed bas

6、eJPG-XL 160 x2001087 bytesMOZJPG 96x1201106 bytes6IMAGE SIZE REDUCTION:AVOID ALIASING!Source photo from cameraRetain only 1 in 64 pixels-every eighth pixel in x and y directions.Aliasing:High frequency info appear at low frequencies.7TARGET FILE SIZE:960 BYTESHEIC:64x70,908 bytesORIG:1205x1326509697