Brightness Preserving Image Contrast

N. A.

doi:10.34028/iajit

Article Details

Brightness Preserving Image Contrast

Authors:

N. A.

Publisher:

Zarqa University, Jordan

Journal:

The International Arab Journal of Information Technology (IAJIT) Vol.11 Issue 1, pp.33-40

Document Type:

Article

Publication Date:

1/2014

Document Language:

English

Document ID (Org No.):

2001388877

pISSN:

2309-4524

DOI:

10.34028/iajit

Keywords:

Abstract:

 This  paper  presents  a  simple  and  effective  method  f or  image  contrast  enhancement  called  spatially  weig hted 
histogram  equalization.  Spatially  weighted  histogra m  not  only  considers  the  times  of  each  grey  value  a ppears  in  a  certain 
image,  but  also  takes  the  local  characteristics  of  each  pixel  into  account.  In  the homogeneous  region  of  an  image,  the spatial 
weights  of  pixels  tend  to  zero,  whereas  at  the  edge s  of  the  image,  this  weights  are  very  large.  In  order  to  maintain  the  mean 
brightness of the original image, the grey level tr ansformation function calculated by spatial weighte d histogram equalization 
is  modified,  and  the  final  result  is  given  by  mappi ng  the  original  image  through  this  modified  grey  le vel  transformation 
function.  The  experimental  results  show  that  the  pr oposed  method  has  better  performance  than  the  exist ing  methods,  and 
preserve the original brightness quite well, so tha t it is possible to be utilized in consumer electronic products.

Article Details

Brightness Preserving Image Contrast

Authors:

N. A.

Publisher:

Zarqa University, Jordan

Journal:

The International Arab Journal of Information Technology (IAJIT) Vol.11 Issue 1, pp.33-40

Document Type:

Article

Publication Date:

1/2014

Document Language:

English

Document ID (Org No.):

2001388877

pISSN:

2309-4524

DOI:

10.34028/iajit

Image contrast enhancement

histogram equalization

brightness preserving enhancement

spatially weighted histogram

Issues

Article Details

Brightness Preserving Image Contrast

Authors: N. A.

Publisher: Zarqa University, Jordan

Journal: The International Arab Journal of Information Technology (IAJIT) Vol.11 Issue 1, pp.33-40

Document Type: Article

Publication Date: 1/2014

Document Language: English

Document ID (Org No.): 2001388877

pISSN: 2309-4524

DOI: 10.34028/iajit

Image contrast enhancement

histogram equalization

brightness preserving enhancement

spatially weighted histogram

Issues

Authors:

N. A.

Publisher:

Zarqa University, Jordan

Journal:

The International Arab Journal of Information Technology (IAJIT) Vol.11 Issue 1, pp.33-40

Document Type:

Article

Publication Date:

1/2014

Document Language:

English

Document ID (Org No.):

2001388877

pISSN:

2309-4524

DOI:

10.34028/iajit