INFINITY ANALYZE User's Manual - Spectra Services

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Lumenera INFINITY ANALYZE User’s Manual Release 6.0.0 From Camera Control Sub-Pane Push to perform white balance based on a small rectangle within the visible portion of the live image. The operation is completed by a click on the live image, which specified the center of the rectangle on which the white balance will be based. The width and height of the rectangle is the smallest region of interest that is supported by the camera. 3.1.15 Manual White Balance Use the Manual White Balance command to adjust the gain setting used on each color channel to manipulate the color output of the camera. This feature can be used to fine tune the color appearance of the camera image, when necessary. 3.1.16 Light Source Use the Light Source command to tune the color reproduction of the camera. The same object may appear slightly different in color under different lighting conditions. The reason for this change in camera response is due to the light source itself, which can have varied chromatic content, called temperature. It is measured in Kelvin. When describing a light source as having a Kelvin rating, it refers to a light source that emits energy across the entire visible range from 300nm to 700nm. Sunlight and incandescent lamps fit to this model conveniently. However, all fluorescent and discharge lamps have interrupted spectra, where Kelvin temperature is only used in a loose sense to describe wavelength distributions of the light sources. DAYLIGHT Light Source Kelvin Clear Blue Sky 8000 to 27000 Rainy, Misty Daylight 7200 to 8500 Overcast Daylight 6500 to 7200 Direct Sun + Clear Blue Sky 5700 to 6500 Summer Sunlight (9am to 3pm) 5400 to 5700 Page 36 Copyright © 2006-2011
Release 6.0.0 Lumenera INFINITY ANALYZE User’s Manual ARC LAMP FLUORESCENT LAMP TUNGSTEN LAMP CANDLE Summer Sunlight (before 9am or after 3pm) 4900 to 5600 Electronic Flash (Typical) 6200 to 6800 Xenon Arc (unfiltered) 6000 White Flame Carbon Arc 5000 Yellow Flame Carbon Arc 3200 'True Daylight' Color Match Tubes 6500 'Daylight' Cool White Tubes 4300 'Warm White' Tubes 3000 Photoflood & 3400K Tungsten-Halogen 3400 Tungsten-Halogen and Photo Lamps 3200 Projection Lamps (500 to 1000 Watts) 2900 to 3000 General Purpose Lamps (200 to 500 Watts) 2900 Household Lamps (100 to 150 Watts) 2850 Household Lamps (60 Watts) 2800 Household Lamps (40 Watts) 2750 Standard Candle 2000 Candle Flame 1500 The camera itself or INFINITY ANALYZE cannot possibly determine the temperature of the light source from live images alone and has to rely on user input to generate the digital image that best matches human perception. Select to indicate to INFINITY ANALYZE that the light source has an interrupted spectrum. Select to indicate to INFINITY ANALYZE to add more red. Select to indicate to INFINITY ANALYZE to add even more red. Select to indicate to INFINITY ANALYZE to add more blue. Select to indicate to INFINITY ANALYZE to add more red and blue. Select to indicate to INFINITY ANALYZE no color Copyright © 2006-2011 Page 37
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