Method and apparatus for resampling line scan data

An apparatus comprising:

• means for accepting line-scan data sets at a camera rate from a line-scan camera, each line-scan data set being of an object imaged for a fixed exposure time and moving at a relative speed in relation to the line-scan camera;
• means for resampling coupled to the means for accepting, the resampling being of the line-scan data sets to produce resampled line image data sets at a desired sampling distance, the resampling a function of the camera rate, a measure of the relative speed between the line-scan camera and the object being imaged by the line-scan camera;
• and the desired sampling distance,
• such that the resampling by the means for resampling adjusts for variations in relative speed to produce faithfully exposed data.

An apparatus comprising:

• a data conditioner to accept line-scan data sets at a camera rate from a line-scan camera, each line-scan data set being of an object imaged for a fixed exposure time and moving at a relative speed in relation to the line-scan camera;
• an encoder terminal to accept a measure of the relative speed between the line-scan camera and the object being imaged by the line-scan camera;
• and
• a resampler coupled to the data conditioner and to the encoder terminal, the resampler to resample accepted line-scan data sets to produce sets of line image data at a desired sampling distance, the resampling a function of the camera rate, the measure of relative speed and the desired sampling distance,
• such that the resampling adjusts for variations in relative speed to produce faithfully exposed data.

An apparatus comprising:

• a data conditioner to accept line-scan data sets at a camera rate from a line-scan camera, each line-scan data set being of an object imaged for a fixed exposure time and moving at a relative speed in relation to the line-scan camera;
• a rate converter to accept a measure of the relative speed between the line-scan camera and the object being imaged by the line-scan camera and produce a web-rate signal related to the accepted measure of relative speed by a scaling factor;
• and
• a resampler coupled to the data conditioner and to the rate converter, the resampler to resample accepted line-scan data sets to produce sets of resampled line image data at a desired sampling distance, the resampling a function of the camera rate, the measure of relative speed and the desired sampling distance,
• an image store coupled to the resampler to accept the sets of line image data;
• and
• an interface between a computer system and the rate converter, the resampler, and image store to provide for transferring the resampled line image data sets to the computer system, and for setting the scaling factor and desired sampling distance,
• such that the resampling adjusts for variations in relative speed to produce faithfully exposed data.

A carrier medium carrying machine readable instructions to instruct one or more processors of a processing system to implement a method comprising:

• accepting line-scan data sets at a camera rate from a line-scan camera, each line-scan data set being of an object imaged for a fixed exposure time and moving at a relative speed in relation to the line-scan camera;
• accepting a measure of the relative speed between the line-scan camera and the object being imaged by the line-scan camera;
• and
• resampling the line-scan data sets to produce resampled line image data sets at a desired sampling distance, the resampling a function of the camera rate, the measure of relative speed and the desired sampling distance,
• such that the resampling adjusts for variations in relative speed to produce faithfully exposed data.