Features

Modules
	Moments
	Contour Code
	Pixel/Address Lists

Data Structures
struct	feature
	Features of Unlabelled RLC. More...
struct	ftr
	Features of Labelled RLC Objects. More...

Detailed Description

Determination of object attributes is based on run length encoded images and will be done as follows:

1. The shape of the desired object is seperated from its background by an implicit binarization done at the transformation process of the (preprocessed) pixel image to its run length encoded representation (RLC).
2. Pixel data in RLC will be collated to objects.
3. Object features will be calculated and provided to the program.

Determinable features of a pixel object are its

• Area Size.
• Position of the Mass Center.
• Bounding Box.
• Contour Pixel Position as Contour Inspection Starting Point (contour8()).
• Binary Color to locate several Objects.
• Eccentricity.
• Number of Holes.
• Inclusion Properties.
• Subpixel accurate Mass Center Position.
• Centralized Moments.
• Hu Moments.
• Angle.

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Data Structure Documentation

feature

struct feature

Data Fields
U32	area	Object Pixel Count.
U32	x_center	Center of Gravity, X Coordinate.
U32	y_center	Center of Gravity, Y Coordinate.
I32	x_min	Smallest X Coordinate at Object (Bounding Box).
I32	x_max	Largest X Coordinate at Object (Bounding Box).
I32	y_min	Smallest Y Coordinate at Object (Bounding Box).
I32	y_max	Largest Y Coordinate at Object (Bounding Box).
I32	x_lst	Rightmost X Coordinate at Object of Lowermost Object Line.

ftr

struct ftr

Data Fields
U32	area	Object Pixel Count.
U32	x_center	Center of Gravity, X Coordinate.
U32	y_center	Center of Gravity, Y Coordinate.
I32	x_min	Smallest X Coordinate at Object (Bounding Box).
I32	x_max	Largest X Coordinate at Object (Bounding Box).
I32	y_min	Smallest Y Coordinate at Object (Bounding Box).
I32	y_max	Largest Y Coordinate at Object (Bounding Box).
I32	x_lst	Rightmost X Coordinate at Object of Lowermost Object Line.
I32	color	Object Color.
F32	x_cf	Center of Gravity, X Coordinate, float.
F32	y_cf	Center of Gravity, Y Coordinate, float.