RONI Based Secured and Authenticated Indexing of Lung CT Images

Table 1

Attacks applied over the image.

Attacks	Variation 1	Variation 2
Noise insertion	Salt and pepper noise with 0.01 as noise density	Salt and pepper noise with 0.02 as noise density
Intensity adjustment	Reducing the contrast by 10	Reducing the contrast by 30
Blurring attack	Motion blur with lens and theta as 0.1	Motion blur with lens and theta as 0.9
Unauthorized access	Unauthorized embedding	Unauthorized detection and removal