The Vectorization of Digital Imagery: Image Tracing

2015 ◽  
pp. 85-95
Author(s):  
Wallace Jackson
Keyword(s):  
Digital Imagery

Evaluation of CRT-displayed digital imagery using subjective scaling

1982 ◽  
Author(s):  
Betty P. Chao ◽  
Robert J. Beaton ◽  
Harry L. Snyder
Keyword(s):  
Digital Imagery

STEGANOGRAFI DENGAN MENGGUNAKAN METODE LSB DAN ALGORITMA HILL CIPHER

2017 ◽  
Vol 1 (1) ◽  
Author(s):  
Sherly Gina Supratman
Keyword(s):  
Digital Images ◽  
Text Messages ◽  
The Internet ◽  
Digital Imagery ◽  
Least Significant Bit ◽  
Hill Cipher ◽  
Secure Data ◽  
Audio Video ◽  
The Hill

AbstrakJaringan Komunikasi seperti Internet� merupakan jaringan yang tidak aman untuk mentransmisi data, seperti teks, audio,video dan citra digital. Salah satu cara untuk pengamanan data dapat dilakukan dengan menggunakan proses kriptografi dan �steganografi. Penggunaan ini dengan tujuan untuk merahasiakan pesan yang dikirim dan sekaligus menghindarkan pesan tersebut dari kecurigaan pihak lain yang tidak berkepentingan.Pesan yang digunakan dalam makalah ini adalah berupa text dengan menyisipkannya pada gambar. Pada proses kriptografi, pesan yang berupa text akan dienkrip dengan algoritma Hill Chiper, dan kemudian pesan yang telah dienkrip akan dilakukan proses steganografi pada citra digital� 8 bit dengan skala 0 � 255, dengan metode Least Significant Bit ( LSB ).�Kata kunci: Kriptografi, Hill Chiper, Steganografi, Least Significant Bit�AbstractCommunication Networks such as the Internet are unsafe networks for transmitting data, such as text, audio, video and digital imagery. One way to secure data can be done by using cryptography and steganography process. This use is for the purpose of concealing messages being transmitted and avoiding such messages from the suspicion by others who are not interested.The message used in this paper is text by inserting it in the image. In the cryptographic process, text messages will be encrypted with the Hill Chiper algorithm, and then the encrypted message will be steganographed on 8-bit digital images on a scale of 0-255, using the Least Significant Bit (LSB) method.�Keywords: Cryptography, Hill Chiper, Steganography, Least Significant Bit

Predicting grain yield in rice using multi-temporal vegetation indices from UAV-based multispectral and digital imagery

2017 ◽  
Vol 130 ◽  
pp. 246-255 ◽  
Author(s):  
X. Zhou ◽  
H.B. Zheng ◽  
X.Q. Xu ◽  
J.Y. He ◽  
X.K. Ge ◽  
...  
Keyword(s):  
Grain Yield ◽  
Vegetation Indices ◽  
Digital Imagery ◽  
Multi Temporal

MAPPING GRAIN SORGHUM GROWTH AND YIELD VARIATIONS USING AIRBORNE MULTISPECTRAL DIGITAL IMAGERY

2000 ◽  
Vol 43 (6) ◽  
pp. 1927-1938 ◽  
Author(s):  
C. Yang ◽  
J. H. Everitt ◽  
J. M. Bradford ◽  
D. E. Escobar
Keyword(s):  
Grain Sorghum ◽  
Growth And Yield ◽  
Digital Imagery

Detection of Yellow Hawkweed (Hieracium pratense) with High Resolution Multispectral Digital Imagery

1995 ◽  
Vol 9 (3) ◽  
pp. 477-483 ◽  
Author(s):  
Hubert W. Carson ◽  
Lawrence W. Lass ◽  
Robert H. Callihan
Keyword(s):  
Supervised Classification ◽  
Digital Images ◽  
Ground Cover ◽  
Unsupervised Classification ◽  
Digital Imagery ◽  
Charge Coupled Device ◽  
Spectral Filters ◽  
A Charge ◽  
Northern Idaho

Yellow hawkweed infests permanent upland pastures and forest meadows in northern Idaho. Conventional surveys to determine infestations of this weed are not practical. A charge coupled device with spectral filters mounted in an airplane was used to obtain digital images (1 m resolution) of flowering yellow hawkweed. Supervised classification of the digital images predicted more area infested by yellow hawkweed than did unsupervised classification. Where yellow hawkweed was the dominant ground cover species, infestations were detectable with high accuracy from digital images. Moderate yellow hawkweed infestation detection was unreliable, and areas having less than 20% yellow hawkweed cover were not detected.

Grain size analysis for coarse river beds using digital imagery processing

2004 ◽  
pp. 753-760
Author(s):  
R Weichert ◽  
M Wickenhäuser ◽  
G Bezzola ◽  
H Minor
Keyword(s):  
Grain Size ◽  
Grain Size Analysis ◽  
Size Analysis ◽  
Digital Imagery ◽  
Imagery Processing

scholarly journals Supplemental Material: Bedrock gorge incision via anthropogenic meander cutoff

2021 ◽  
Author(s):  
Adrian Bender
Keyword(s):  
Grain Size ◽  
Field Data ◽  
Digital Imagery ◽  
Size Estimation ◽  
Discharge Data ◽  
Elevation Data ◽  
Access Information ◽  
Grain Size Estimation

Expanded methods for discharge and grain size estimation; access information for digital imagery and elevation data; precipitation and discharge data; and field data collected during this study.

scholarly journals Implementasi Pengamanan Citra Digital Menggunakan Algoritma ICE

2020 ◽  
Vol 1 (3) ◽  
pp. 284
Author(s):  
Josua Alfiandi Sinuhaji
Keyword(s):  
Digital Image ◽  
Block Cipher ◽  
Digital Images ◽  
Source Code ◽  
Digital Imagery ◽  
The Subject ◽  
Data Theft ◽  
The Difference ◽  
Cryptographic Techniques ◽  
Rotation Function

Digital imagery is currently very widely used, so it is very vulnerable to data theft by unauthorized parties. In order to maintain the security of digital images can be done by using cryptographic techniques. Cryptographic techniques can encode digital images by encrypting them in the form of passwords that are not understood. ICE is a block cipher published by Kwan in 1997. This algorithm has a structure similar to DES, but with additional bit permutations that do not depend on the key in the rotation function. There are various types of ICE variants, namely Thin-ICE, ICE standard, and ICE-n. The difference between the three is the length of the keyword used and the number of rounds. The Thin-ICE algorithm uses 64 bits and 8 turns. The ICE standard uses 64 bits and 16 round keys. The ICE-n algorithm uses keys 64n bits and 16n turns. The use of this type of algorithm can be adjusted to the needs of users where Thin-ICE has the lowest level of security among the three, while ICE-n is the highest. This algorithm does not become the subject of a patent and the source code can be used freely.Keywords : Cryptography, Digital Image,Algorithm,ICE.

Sign in / Sign up

Export Citation Format

Share Document