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Fig. 6.Chromatic aberration. (Top) The nature of the focusing errors and image position differences for light from the blue and red ends of the spectrum are shown in the upper and lower panels, respectively. (Middle) The refractive power of the eye varies with wavelength of light, essentiall...
LaMa generalizes surprisingly well to much higher resolutions (~2k❗️) than it saw during training (256x256), and achieves the excellent performance even in challenging scenarios, e.g. completion of periodic structures. [Project page] [arXiv] [Supplementary] [BibTeX] [Casual GAN Papers Sum...
Most of existing image encryption schemes are proposed in the spatial domain which easily destroys the correlation between pixels. This paper proposes an image encryption scheme by employing discrete cosine transform (DCT), quantum logistic map and subst
A multi-image encryption scheme based on the fractional-order hyperchaotic system is designed in this paper. The chaotic characteristics of this system are analyzed by the phase diagram, Lyapunov exponent and bifurcation diagram. According to the analyse
Image denoising faces significant challenges, arising from the sources of noise. Specifically, Gaussian, impulse, salt, pepper, and speckle noise are complicated sources of noise in imaging. Convolutional neural network (CNN) has increasingly received attention in image denoising task. Several CNN metho...
One group of methods imposes certain conditions on pixels in Ω−Λ. Examples include periodic, reflective, and anti-reflective boundary conditions [23–27]. Other group of methods [17, 28, 29] does not impose any conditions on pixels in Ω−Λ, and let the iteration itself determine ...
These are specified by the Amazon Ramdisk Image (ARI, id: ari-yyyyyy) and the Amazon Kernel Image (AKI, id: aki-zzzzzz), which are part of the configuration of the template. AMIs are either created from scratch or “bundled” from existing EC2 instances. A common practice is to ...
The periodic chest motion of breathing and heartbeats can be visualised by applying the STFT technique with a sliding window to generate a time–frequency spectrogram25,26. In this work, we report an image segmentation-based HR and BR extraction method to improve the measurement accuracy and ...
In this paper, a novel image encryption algorithm based on the Once Forward Long Short Term Memory Structure (OF-LSTMS) and the Two-Dimensional Coupled Map Lattice (2DCML) fractional-order chaotic system is proposed. The original image is divided into se