31 citations · 77 across the 11 of their papers we have counts for
11 papers
de Almeida-Thouless Stability and Replica Symmetry Breaking in a Hybrid Watermarking Model with Image and Message Decoding
Tatsuya Uezu, Kao Hayashi, Masaki Kawamura
We investigate the de Almeida-Thouless (AT) stability of the replica symmetric (RS) solution for a spread-spectrum watermarking model incorporating Bayes-estimation-based image res…
Estimation of geometric transformation matrices using grid-shaped pilot signals
Rinka Kawano, Masaki Kawamura
Digital watermarking techniques are essential to prevent unauthorized use of images. Since pirated images are often geometrically distorted by operations such as scaling and croppi…
Performance Evaluation of Associative Watermarking Using Statistical Neurodynamics
Ryoto Kanegae, Masaki Kawamura
We theoretically evaluated the performance of our proposed associative watermarking method in which the watermark is not embedded directly into the image. We previously proposed a…
Statistical mechanical evaluation of spread spectrum watermarking model with image restoration
Masaki Kawamura, Kao Hayashi, Tatsuya Uezu +1
In cases in which an original image is blind, a decoding method where both the image and the messages can be estimated simultaneously is desirable. We propose a spread spectrum wat…
Retrieval of branching sequences in associative memory model with common external input and bias input
Kentaro Katahira, Masaki Kawamura, Kazuo Okanoya +1
We investigate a recurrent neural network model with common external and bias inputs that can retrieve branching sequences. Retrieval of memory sequences is one of the most importa…
Stochastic transitions of attractors in associative memory models with correlated noise
Masaki Kawamura, Masato Okada
We investigate dynamics of recurrent neural networks with correlated noise to analyze the noise's effect. The mechanism of correlated firing has been analyzed in various models, bu…