Based on the property of uniformity of the corresponding Fibonacci transformation,the watermarking can be distributed uniformly in the host image.

This paper presents a kind of digital audio scrambling method based on Fibonacci transformation.

A digital image scrambling method based on Fibonacci transformation is proposed.

As the research background of image information securing , the properties and periodicity of the three dimension similar Fibonacci transformation of digital images is discussed .

Proposed in this paper is a novel algorithm based on the generalized Fibonacci transformations for scrambling video,which has many properties,such as rapidly speed,good scrambling effect,anti-cutting,anti-noise,and independence regardless of any video formation or encode.

The inductive parameters and models in the d-q circuit are derived firstly in the paper by a unified expression for calculating inductances of AC machines and double d-q transformations respectively.

By use of d-q transformation, in this control method a three phase AC system is transformed into rotating orthogonal coordinate system and under the transformed coordinate system the compensating current of active power filter is controlled by PI controller to make it trace the reference current.

A method of harmonic and reactive currents detection based on d-q coordinates transformation for three-phase voltage and current is proposed, which separates the responding components after d-q transformation to realize the current detection.

APF parallel operation based on d-q transform;

Recognition of transient voltage disturbances based on integrated mathematics morphology filters and non-delay d-q transform;

An improved d-q transform method without time delay is proposed.