Decides whether to optimize parameters for weak edges or for jagged ones.

Values of this enumeration:

• ExtraSensitive - For finding extremely weak edges and ones that are adjacent to a very narrow quiet zone. May be quite slow.
• Sensitive - For finding weak edges or ones that are adjacent to a narrow quiet zone. May be a bit slower.
• Balanced - Provides a good balance between sensitivity and robustness.
• Robust - For finding distorted or jagged edges.
• ExtraRobust - For finding highly distorted or jagged edges. Can be even used to detect codes without Finder Pattern.