Impact of pixel value truncation on image quality of low dose chest CT.
Sign Up to like & getrecommendations! Published in 2022 at "Medical physics"
DOI: 10.1002/mp.15589
Abstract: PURPOSE In some noisy low-dose CT lung cancer screening images, we noticed that the CT density values of air were increased and the visibility of emphysema was distinctly decreased. By examining histograms of these images,… read more here.
Keywords: pixel value; mean density; density; truncation ... See more keywords
Directional PVO for reversible data hiding scheme with image interpolation
Sign Up to like & getrecommendations! Published in 2018 at "Multimedia Tools and Applications"
DOI: 10.1007/s11042-018-6203-2
Abstract: Pixel Value Ordering (PVO) is an efficient data hiding scheme where pixels are ranked in ascending order within an image block and then modify minimum and maximum pixel value to embed secret data. The embedding… read more here.
Keywords: image; block; pixel value; directional pvo ... See more keywords
Fast contrast enhancement by adaptive pixel value stretching
Sign Up to like & getrecommendations! Published in 2018 at "International Journal of Distributed Sensor Networks"
DOI: 10.1177/1550147718793803
Abstract: In this article, we propose a fast and effective method for digital image contrast enhancement. The gray-level dynamic range of contrast-distorted images is extended maximally via adaptive pixel value stretching. The quantity of saturated pixels… read more here.
Keywords: contrast; contrast enhancement; pixel value; value stretching ... See more keywords
Reversible data hiding scheme based on pixel-value differencing in dual images
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Distributed Sensor Networks"
DOI: 10.1177/1550147720911006
Abstract: In this article, a new reversible data hiding scheme using pixel-value differencing in dual images is proposed. The proposed pixel-value differencing method can embed more secret data as the difference value of adjacent pixels is… read more here.
Keywords: value differencing; image; value; scheme ... See more keywords
Can Pixel Value Ratio be Used in the Assessment of Ceramic Bone Substitute Incorporation? Observations from a Pilot Study
Sign Up to like & getrecommendations! Published in 2017 at "Polish Journal of Radiology"
DOI: 10.12659/pjr.903022
Abstract: Summary Background Assessment of bone graft substitute incorporation is critical in the clinical decision making process and requires special investigations. We examined if the pixel value ratio (PVR) obtained in routine follow-up digital radiographs could… read more here.
Keywords: value ratio; pixel value; bone; incorporation ... See more keywords
Reversible Data Hiding Using an Improved Pixel Value Ordering and Complementary Strategy
Sign Up to like & getrecommendations! Published in 2022 at "Symmetry"
DOI: 10.3390/sym14122477
Abstract: Reversible data hiding (RDH) schemes based on pixel value ordering have gained significant popularity due to their unique capability of providing high-quality marked images with a decent embedding capacity, while also enabling secret information extraction… read more here.
Keywords: pixel value; layer; value; value ordering ... See more keywords
Use of the Pixel Value Ratio Following Intramedullary Limb Lengthening: Uncomplicated Full Weight-bearing at Lower Threshold Values
Sign Up to like & getrecommendations! Published in 2022 at "Strategies in Trauma and Limb Reconstruction"
DOI: 10.5005/jp-journals-10080-1542
Abstract: Abstract Aims The pixel value ratio (PVR) can be used to assess regenerate consolidation after lengthening and guide advice for full weight-bearing (FWB). This study aimed to analyse the PVR in adults having femoral lengthening,… read more here.
Keywords: pixel value; ratio; value ratio; full weight ... See more keywords