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LITERATURE SURVEY OF AUTOMATIC FACE RECOGNITION ...

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Every times the algorithm outputs a value, the window Sxy is moved to the<br />

next location in the image. The algorithm then is reinitialized and applied to the<br />

pixels in the new location.<br />

CHAPTER XXI<br />

EXPERIMENTAL RESULTS AND ANALYSIS<br />

The adaptive median filter is designed to remove impulsive noise from<br />

images. Therefore, our algorithm’s performance was first tested with basic salt<br />

and pepper noise with a noise density of 0.35.<br />

(a) (b)<br />

Fig21.1:<br />

(a) The image with ‘salt and pepper’ noise of 0.35 noise density.<br />

(b) Output of the standard median filter.<br />

Fig 21.2: Output of the adaptive median filter shows the improvement in<br />

performance with respect to the standard median filter.<br />

64

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