G-quadtree: A hierarchical representation of gray-scale digital images

1986 ◽  
Vol 2 (4) ◽  
pp. 219-226 ◽  
Author(s):  
Tosiyasu L. Kunii ◽  
Issei Fujishiro ◽  
Xiaoyang Mao
Keyword(s):  
Digital Images ◽  
Gray Scale ◽  
Hierarchical Representation

Reconstruction and Cross-Section Generation of Hierarchically Represented 3D Gray-Scale Digital Images

1987 ◽  
pp. 461-481
Author(s):  
Xiaoyang Mao ◽  
Tosiyasu L. Kunii ◽  
Issei Fujishiro ◽  
Tsukasa Noma
Keyword(s):  
Cross Section ◽  
Digital Images ◽  
Gray Scale

scholarly journals Analysis the digital images by using morphology operators

2021 ◽  
Vol 24 (3) ◽  
pp. 1654
Author(s):  
Hadeel Amjed Saeed ◽  
Sumaya Hamad ◽  
Azmi Tawfik Hussain
Keyword(s):  
Digital Images ◽  
Color Image ◽  
Variable Number ◽  
Gray Scale ◽  
Original State ◽  
The One

In this paper, we deal with morphology images that try to improve the use of images. On the one hand, the process is used to obtain the histogram of the image then converted it into a non-color image (gray scale). The next step is to perform the erosion, dilation, open and close operations on the images, how these methods have important effects, and how can be used on a variable number of images, and found the differences between them. These operations were applied on four different images, check images, four basic operations (dilation, erosion, open and close) for each image were performed. Then, retrieving process to the original state of the image (the colored copy) was applied. The results found that retrieving the original images is difficult, and there is the occurrence of some noises on the image when it was retrieved. Finally, conclusions of the work are presented.

The gray-scale ink-jet printer: value in making hard copies of digital images.

1995 ◽  
Vol 164 (1) ◽  
pp. 225-227 ◽  
Author(s):  
M J Combs ◽  
J Snell ◽  
W S Cail ◽  
T Maier ◽  
D A Buck
Keyword(s):  
Digital Images ◽  
Gray Scale ◽  
Ink Jet

scholarly journals Optimizations of a Cryptographic Method Using Gray Scale Digital Images

2013 ◽  
Vol 2 (1/2) ◽  
pp. 141-146
Author(s):  
M. Y. R. Gadelha ◽  
C. F. F. Costa Filho ◽  
M. G. F. Costa
Keyword(s):  
Digital Images ◽  
Gray Scale

scholarly journals A Proposed Watermarking Technique in Transform Domain

2012 ◽  
pp. 71-75
Author(s):  
Mansi Hasija ◽  
Alka Jindal
Keyword(s):  
World Wide Web ◽  
World Wide ◽  
Digital Images ◽  
Transform Domain ◽  
Gray Scale

Security of images is a major concern area as digital images are available all over world wide web. Many watermarking techniques have been developed to protect images from illegal manipulations. In this paper , we propose a watermarking technique for gray scale images in transform domain using DCT and DWT. The proposed technique was compared with other techniques and it has shown higher robustness against attacks.

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