New algorithm for removal of salt-pepper noises of visual text images
Minghu Ha · Computer Engineering and Applications Journal · 2007
For the salt-pepper noise which deduces in the gaining,processing,transmission of the visual text images,a new algorithm for removal of salt-pepper noises is proposed,which based on the characters stroke characteristic.This algorithm can estimate whether a pixel and it's neighboring pixels are salt-pepper noises or not,and differentiate effectively characters from salt-pepper noise.The experimental results show clearly that this algorithm can restrain salt-pepper noises well and truly,at the same time,comparing with those traditional denoise algorithms,it avoids the influence for characters stroke,and decreases the disturbance for subsequent recognition.