| 摘要 |
Color is edited using a color representation including digital values B (brightness), e and f such that B= , e=E/B, f=F/B, where DEF is a linear color coordinate system. Alternatively, color is represented using digital values B, C (chroma) and H (hue), where cos C=D/B and tan H=E/F. Brightness can be changed without a color shift by changing the B coordinate and leaving unchanged the other coordinates e and f or C and H. Other image editing techniques and other features are also provided. |
