ความสะท้อนแสง

Theme

Widget powered by . Free, no account required.

รู้จักในชื่ออื่นว่า: reflection

The amount of light reflected by barcode bars (low) and spaces (high), measured as a percentage.

คำศัพท์ที่เกี่ยวข้อง

Bar Space Print Contrast Signal

…illuminates the barcode, and the sensor row records the reflectance pattern in one shot. This eliminates moving parts,…

…Signal capture : A photodiode or image sensor captures the reflectance pattern Signal processing : Analog signals are converted…

…all individual parameters, evaluated across multiple scan reflectance profiles. The Eight Parameters Each scan profile is…

…dark and light cells Modulation Uniformity of cell reflectance values Fixed pattern damage Damage to finder patterns,…

…cannot distinguish between colors that have similar reflectance at 650nm. Safe Color Combinations Bars (Dark) Background…

…(linear) or ISO/IEC 15415 (2D): Symbol contrast Minimum reflectance Edge contrast Modulation Defects Decodability Quiet zones…

…A (best) to F (fail) based on: - Symbol contrast - Minimum reflectance - Edge contrast - Modulation - Decodability ISO/IEC 15415…

…use dark bars on light backgrounds with a minimum 40% reflectance difference. Scanner Configuration Symbology filtering :…