Method and system providing calibration of light detected from biological samples with a correction factor including components for each of a plurality of spectrally distinguishable species and/or for each well and/or for each filter.

A method of compensating for nonuniformities in an image sensor includes: providing an image sensing device 20; measuring test pixel signals from the image sensing device 20 during a test mode; determining which test pixel signals are greater than a fixed threshold level S.sub.T ; and calculating nonuniformity coefficients for the pixels having test pixel signals greater than the fixed threshold level S.sub.T.

A method and apparatus used in the field of image compositing which eliminates the need to obtain an original clear frame of the backing during production, by synthesizing during post production a clear frame of the backing from a frame of the foreground scene that includes the subject as well as the backing. This synthetic clear frame eliminates the problems of obtaining a registered clear frame during production, and thereby permits the ready application of nonuniformity correction to image co...

A method and apparatus 100 for correcting tire nonuniformity is disclosed. The invention is particularly suited for correcting tread runout and connicity problems for large off-road tires. Multiple measurements are taken in multiple circumferentially spaced planes which enable data to be fed into a computer which predicts an optimal profile to correct tire non-uniformities using preset rules. A virtual template directs correction of the tire profile.

A nonimpact print apparatus employing, for example, a printhead comprising a bank of light emitting diodes (LED's) provides correction for nonuniformities in light output of the LED's. A binary type of driver is provided for activating each LED in response to the presence of a data bit and a strobe pulse determines the period of activation. Certain LED's are additionally activated both before and after data activation using respective strobe pulses for correction for relative differences in emis...

A method and apparatus used in the field of image compositing which eliminates the need to obtain an original clear frame of the backing during production, by synthesizing during post production a clear frame of the backing from a frame of the foreground scene that includes the subject as well as the backing. This synthetic clear frame eliminates the problems of obtaining a registered clear frame during production, and thereby permits the ready application of nonuniformity correction to image co...

A process and apparatus for measurement of nonuniformity of mass of a gyro rotor having a single bearing. The gyro rotor, which is mounted in a radially fixed and spherically yielding pivot, is rotated to a predetermined speed. The static imbalance of the rotating rotor is then determined by measuring the magnitude and angular position of excursion of the rotating rotor. A force couple acting on the gyro rotor and drift of mass of the gyro rotor are determined by sensing movement of a surface of...

A device for measuring the non-uniformity of photoparametric characteristics of materials and which comprises a luminous signal source, a photoelectric sensor disposed across the path of luminous signals and transforming the latter into electric signals and corresponding to a particular photoparametric characteristic of the material being investigated, and also a decoder with an analyzer whose input is connected electrically to the output of the photoelectric sensor, and whose output is connecte...

In a gamma camera system, means are provided for correcting nonuniformity or lack of correspondence between the positions of scintillations and their calculated and displayed x-y coordinates. In an accumulation mode, pulse counts corresponding with scintillations in various areas of the radiation field are stored in memory locations corresponding with their locations in the radiation field. A uniform radiation source is presented to the detectors during the accumulation mode. When a predetermine...

It is possible to detect with high precision a plurality of types of nonuniformity defects that occur in patterns formed on the surface of an examination object. A device (10) for examination of nonuniformity defects that has a light source (12) for emitting light to a photomask 50 whose surface is provided with a repeating pattern (51) in which unit patterns (53) are arrayed in a regular fashion, and a photodetector (13) for photodetecting and converting into photodetection data scattered light...