Image invisibility assessment for visually encrypted images.
Akira UchidaMasaaki FujiyoshiSayaka ShiotaHitoshi KiyaPublished in: ISPACS (2014)
Keyphrases
- input image
- image data
- image collections
- image features
- test images
- image retrieval
- original images
- image pixels
- high contrast
- image analysis
- image regions
- human observers
- image classification
- image set
- segmentation method
- pixel values
- intensity values
- image processing algorithms
- sample images
- region of interest
- reference images
- lighting conditions
- imaging process
- synthesized images
- grey level
- segmentation algorithm
- image matching
- image blocks
- image database
- perceptual quality
- normalized correlation
- digital imaging
- gray value
- image content
- gray level images
- ccd camera
- feature points
- edge detection
- image noise
- contrast enhancement
- image segmentation
- spatial information
- false matches
- single image
- keypoints
- illumination conditions
- secret image
- image quality
- web images
- image structure
- object recognition
- multiscale
- gaussian noise
- image quality assessment
- super resolution
- gray level
- geometric distortions
- visual features
- image annotation