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Mineralogical Magazine; April 2004; v. 68; no. 2; p. 323-333; DOI: 10.1180/0026461046820189
© Mineralogical Society of Great Britain and Ireland
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FIG. 6. Plot of reflectance standards of 4.3%; 14.7%; 25.1% and 87.3%, respectively, at 550 nm against grey levels measured with a CCD sensor fitted with a 550±10 nm interference filter. The grey levels are average intensities from a 20x20 pixels region taken in the centre of the field of view. The quality of the regression demonstrates the perfect linearity of the CCD response under the chosen imaging conditions.





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JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
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