Linear measurement machine-readable medium, method and system

A method for producing linear measurement of dimensions in a digital image comprising:

• resolving an image of a reference marker having a predetermined length from data in a digital image;
• normalizing an electronic length of the image of the reference marker to the predetermined length;
• selecting a line segment in said image indicative of a dimension to be determined;
• determining dimension data of the line segment;
• and
• determining a length of the line segment as a function of an image of the line segment.

A linear measurement system for producing linear measurement of dimensions in a digital image comprising:

• a digital image processor to provide access to a digital image;
• a display to display an image including dimensions whose value is to be determined;
• image interactive means to select points on the image;
• storage means to store signals indicative of selected points;
• and
• arithmetic means in said digital image processor to determine an electronic length between selected points as a function of said signals and to normalize a first electronic length between a first selected pair of points to a predetermined length and to determine a length of a dimension of an object represented by a second pair of points in the image as a function of a value of the first electronic length.