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A dual-color watermarking algorithm based on elliptical monogenic wavelet transform and singular value decomposition
A dual-color watermarking algorithm using elliptical monogenic wavelet transform and singular value decomposition is proposed. Firstly, the original host image and two color watermark images are decomposed int...
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Book Series
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Chapter
Introduction
Computational optical imaging is a new imaging method recently.
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Chapter
Coded Aperture Imaging
Ordinary lenses cannot reflect, refract or focus X-rays, so coded aperture imaging arises at the historic moment. Modulation masks can change the distribution of beam in imaging systems. This chapter introduce...
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Chapter
Fluorescence Imaging
In this chapter, fluorescence imaging and microscopy are introduced in detail. It is the fundamental mechanisms, different imaging modalities and complex techniques facing the frontiers of biological and medic...
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Chapter
Mask-Modulated Lensless Imaging
The progression of human society has always been intertwined with scientific exploration. Visual information, as the most intuitive and explicit form of data, has become one of humanity's primary ways of acqui...
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Chapter
Ghost Imaging
While traditional imaging methods utilize light reflected or scattered from an object for imaging, where light from the object plane is transmitted to the detector plane and the CCD receives the light field in...
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Chapter
Computerized Tomography
Computed tomography (CT) imaging is a non-invasive diagnostic technique and is widely used for severe diseases in the field of medical imaging. X-ray beam, γ-ray, ultrasonic and other signals, are employed to ...
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Chapter
Phase Imaging
A monochromatic coherent light field can be represented by a two-dimensional complex amplitude, and the amplitude part of the complex amplitude is defined as the phase of the light field.
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Chapter
Adaptive Optical Imaging
Babkock proposed the use of a wavefront sensor to detect wavefront aberration information and then utilize deformable optical elements to generate controllable optical phase shifts for compensating wavefront a...
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Chapter
Polarization Imaging
Polarization imaging is a technique that involves capturing and analyzing the polarization properties of light to obtain additional information about a scene or an object.
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Book
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Chapter
Imaging Methods via Compressed Sensing
Prior to the introduction of the theory of Compressive Sensing (CS), traditional signal acquisition relied upon the Nyquist theorem.
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Chapter
Computer Generated Holography
Computational holography combines traditional optical imaging with computational techniques, which can improve the capabilities of a camera, and reduce the cost and size of camera elements. In this chapter, th...
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Article
Effect of Al on the Microstructure and Properties of Fe-Cr-C-N System Surfacing Alloy
In this paper, Fe-Cr-C-N-Al surfacing alloy was prepared on Q235 steel plate by open-arc surfacing with self-shielded flux-cored wire. The effects of aluminum content on the microstructure and mechanical prope...
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Chapter and Conference Paper
FFBDNet: Feature Fusion and Bipartite Decision Networks for Recommending Medication Combination
Recommending medication combinations for patients is an essential part of artificial intelligence in the healthcare field. Existing approaches improve the effect of recommendations by considering how to make f...
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Chapter
Encryption/Decryption with Optical Transform
In this chapter, the methods of image encryption and decryption based on optical transformation are introduced. The extended fractional Fourier transform is constructed by designing an eccentric lens group, an...
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Chapter
Image Cryptosystem for Different Kinds of Image by Using Improved Arnold Map
In this chapter, the methods of image encryption and decryption based on optical transformation are introduced. The extended fractional Fourier transform is constructed by designing an eccentric lens group, an...
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Book
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Article
The novel mechanism for field-enhanced effect of the dielectric response in relaxor KTN crystal
Recent experiment reveals that the dielectric response to the bias electric field has obvious dependence on the frequency, which is mainly manifested in strong field-enhanced effect and weak field-enhanced eff...
