NewZigzag指标
A Simple Image Encryption Based on Binary Image Affine Transformation and Zigzag Process
Complexity ( IF 2.121 ), Pub Date : 2022-01-07 , NewZigzag指标 DOI: 10.1155/2022/3865820
Adélaïde Nicole Kengnou Telem, Cyrille Feudjio, Balamurali Ramakrishnan, Hilaire Bertrand Fotsin, Karthikeyan Rajagopal
In this paper, we propose a new and simple NewZigzag指标 method for image encryption. It uses an external secret key of 128 bits long and an internal secret key. The novelties of the proposed encryption NewZigzag指标 process are the methods used to extract an internal key to apply the zigzag process, affine transformation, NewZigzag指标 and substitution-diffusion process. Initially, an original gray-scale image is converted into binary images. An internal secret key is extracted from binary images. The two keys are combined to compute the substitution-diffusion keys. The zigzag process is firstly applied on each binary image. Using an external key, every zigzag binary image is reflected or rotated and a new gray-scale image is reconstructed. The new image is divided into many nonoverlapping subblocks, and each subblock uses its NewZigzag指标 own key to take out a substitution-diffusion process. We NewZigzag指标 tested our algorithms on many biomedical and nonmedical images. It is seen from evaluation metrics that the proposed image encryption scheme provides good statistical and diffusion properties and can resist many kinds of attacks. It is an efficient and secure scheme for real-time encryption and transmission of biomedical images in telemedicine.
ZIGZAG(之字折线)的力量(第一部分)。 开发指标基类
ABCDLEE 于 2021-11-23 21:46:34 发布 166 收藏
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New Feature - Strategies NewZigzag指标 page (WIRE)
作者：
FeatureCAM has a variety of NewZigzag指标 machining cycles for different purposes. Each operation type has a whole range of parameters and options.
Operations — Select the operation that you want to use to cut the feature.
You can have more NewZigzag指标 than one operation by selecting the primary operation in the Operations list and then selecting the Cutoff or Contour options.
- Use on both ends NewZigzag指标 of skim passes — This applies the Retract Length to both ends of skim passes (the wire does not return to the start point at one end). See example.
Stop code — For Stop operations you can choose from:
- M00 is program stop. This stop is always performed.
- M01 is optional program stop. There is a setting NewZigzag指标 on the machine tool to observe or skip these stops.Overlap
Contour overlap — This is used only by the Contour operation. It is the amount NewZigzag指标 by which the Contour operation overlaps.
Total Stockapplies to pocketing and zigzag operations.
Stepover — Enter the stepover amount between passes for Pocketing and Zigzag operations.
Finish allowance — This is the amount of material left after a Pocketing or Zigzag pass. Even NewZigzNewZigzag指标 ag指标 if a Cleanup Pass is used, the finish allowance still remains.
Cleanup Pass is for zigzag operations.
The contour is cut with a contour NewZigzag指标 NewZigzag指标 parallel finishing path to remove any rough edges left by the stepover between passes.
- Cleanup Pass
New Feature - Strategies page (WIRE)
作者：
FeatureCAM has a variety of machining cycles NewZigzag指标 NewZigzag指标 for different purposes. Each operation type has a whole range of parameters and options.
Operations — Select the operation that you want to use to cut the feature.
You can have more than one operation by selecting the primary operation in the Operations list and then selecting the Cutoff or Contour options.
- Use on both ends of skim passes — This applies the Retract Length to NewZigzag指标 both ends of skim passes (the wire does not return to the start point at one end). See NewZigzag指标 example.
Stop code — For Stop operations NewZigzag指标 you can choose from:
- M00 is program stop. This stop is always performed.
- M01 is optional program stop. There is a setting on the machine tool to observe or skip these stops.Overlap
Contour overlap — This is used only by the Contour operation. It is the amount by which the Contour operation overlaps.
Total Stockapplies to pocketing and zigzag operations.
Stepover — Enter the stepover amount between passes for Pocketing and Zigzag operations.
Finish allowance — This is the amount of material left after a Pocketing or Zigzag pass. Even if a Cleanup Pass is used, the finish allowance NewZigzag指标 NewZigzag指标 still remains.
Cleanup Pass is for zigzag operations.
The contour is cut with a contour parallel finishing path to remove any rough edges left by NewZigzag指标 the stepover between passes.
- Cleanup Pass