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ICPR
2004
IEEE

Historical Document Image Enhancement Using Background Light Intensity Normalization

10 years 6 months ago
Historical Document Image Enhancement Using Background Light Intensity Normalization
This paper presents a new background light intensity normalization algorithm suitable for historical document images. The algorithm uses an adaptive linear function to approximate the uneven background due to the uneven surface of the document paper, aged color and light source of the cameras for image lifting. Our algorithm adaptively captures the background with a "best fit" linear function and normalized with respect to the approximation. The technique works for both gray scale and color images with significant improvement in readability.
Venu Govindaraju, Zhixin Shi
Added 09 Nov 2009
Updated 09 Nov 2009
Type Conference
Year 2004
Where ICPR
Authors Venu Govindaraju, Zhixin Shi
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