Image enhancement using background brightness preserving histogram equalisation
Histogram equalisation (HE) is widely used to enhance the image contrast but it tends to over-enhance the image background brightness. Improvement schemes have been introduced to reduce this defect of the conventional HE, but the over-enhancement of the background brightness is still obvious. A...
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| Main Authors: | , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2013
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| Online Access: | https://hdl.handle.net/10356/85397 http://hdl.handle.net/10220/13269 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | Histogram equalisation (HE) is widely used to enhance the image contrast
but it tends to over-enhance the image background brightness.
Improvement schemes have been introduced to reduce this defect of
the conventional HE, but the over-enhancement of the background
brightness is still obvious. A novel approach of nonlinear HE is presented,
which is able to enhance the image contrast while preserving
the background brightness for images with well-defined background
brightness. |
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