Recognition of rotated patterns using neocognitron

نویسندگان

  • Shunji SATOH
  • Hirotomo ASO
  • Shogo MIYAKE
چکیده

A rotation-invariant neocognitron is constructed by extending the neocognitron which can recognize translated, scaled and/or distorted patterns from training ones. In constructing the model two technical methods during the learning, a “threshold-controlling method” and a “rotation matrix method”, are proposed. In numerical simulations, it is shown that the model can recognize globally and/or locally rotated patterns in an arbitrary angle without learning the patterns themselves.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation of Two Neocognitron-type Models for Recognition of Rotated Patterns

We examine the number of cells and execution time taken to correctly recognize rotated patterns in two models: a rotation-invariant neocognitron (RNeocognitron) and a neocognitron-type model (TDR-Neocognitron) which recognizes rotated patterns by use of an associative recalled pattern. In numerical simulations handwritten patterns in CEDER database are used for training and evaluation of recogn...

متن کامل

Neocognitron for rotated pattern recognition

Ideally computer pattern recognition systems should be insensitive to scaling, translation, distortion and rotation. Many neural network models have been proposed to address this purpose. The Neocognitron is a multi-layered neural network model for pattern recognition introduced by Fukushima in the early 1980s. It was considered effective and, after supervised learning, it can recognise input p...

متن کامل

Pattern Recognition System with Top-Down Process of Mental Rotation

A new model which can recognize rotated, distorted, scaled, shifted and noised patterns is proposed. The model is constructed based on psychological experiments in a mental rotation. The model has two types of processes: (i) one is a bottom-up process in which pattern recognition is realized by means of a rotation-invariant neocognitron and a standard neocognitron and (ii) the other is a top-do...

متن کامل

The Performance of the Neocognitron with Various S-Cell and C-Cell Transfer Functions

When a neural network solution to a problem (e.g. handwritten character recognition) is proposed, it is important to know if the structure of the network and the function of the component neurons are well suited to the task. Recent research has examined the structure of Fukushima's neocognitron and the eeect that it has on the classiication of distorted input patterns. We present results which ...

متن کامل

Neocognitron: A hierarchical neural network capable of visual pattern recognition

-A neural network model for visual pattern recognition, called the "neocognitron, "' was previously proposed by the author In this paper, we discuss the mechanism of the model in detail. In order to demonstrate the ability of the neocognitron, we also discuss a pattern-recognition system which works with the mechanism of the neocognitron. The system has been implemented on a minicomputer and ha...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1997