Optically measuring interior cavities

A computer enabled method of measuring the three-dimensional volume or perimeter shape of an interior cavity, said optical cavity having a first edge at a position in said interior cavity and a second edge positioned opposite said first edge, comprising the steps of:

• positioning an optical device at a first position at the first edge of the interior cavity;
• collect a first optical slice of data that represents a first image of a partial volume of the interior cavity using said optical device positioned at said first edge of the interior cavity, said first image having a narrow perimeter portion of the optical cavity that is in good focus and the remainder of said first image being out of focus;
• moving said optical device to additional incremental positions between the first edge and the second edge within the interior cavity,
• collect additional optical slices of data that represent additional images of a partial volume of the interior cavity using said optical device positioned at said incremental positions between the first edge and the second edge within the interior cavity, said additional images having a narrow perimeter portion of the optical cavity that is in good focus and the remainder of said additional images being out of focus;
• and
• combining said first optical slice of data and said additional optical slices of data and filtering out said remainder of said images that are out of focus to retain only said narrow perimeter portions of said images and provide a computer output determination of the three-dimensional volume or perimeter shape of the interior cavity.

A computer enabled method of measuring the perimeter shape of an interior cavity, said interior cavity having a first edge at a position in said interior cavity and a second edge positioned opposite said first edge, comprising the steps of:

• position an optical device at a first position at the first edge of the interior cavity,
• collect a first optical slice of data that represents a partial perimeter shape of the interior cavity using said optical device positioned at said first edge of the interior cavity,
• moving said optical device to additional incremental positions between the first edge and the second edge within the interior cavity,
• collect additional optical slices of data that represent a partial perimeter shape of the interior cavity using said optical device positioned at said incremental positions between the first edge and the second edge within the interior cavity, and
• using the computer to combine said first optical slice of data and said additional optical slices of data to calculate of the perimeter shape of the interior cavity and
• provide a computer output determination of the three-dimensional volume of said interior cavity.