Determines exact line peak position extraction method.

Values of this enumeration:

• FirstBrightPixel - Bright pixel with smallest y coordinate is a result.
• LastBrightPixel - Bright pixel with biggest y coordinate is a result.
• MaximalPixel - Brightest pixel is a result.
• BrightRegionCenter - The center of all bright pixels region is a result.
• BrightMassCenter - The mass center of all bright pixels is a result.