The aim of this paper is to present a transform-based framework for color image enhancement which processes all three color components (R,G,B) simultaneously. In this framework, the image enhancement procedure is supported by a two-dimensional discrete quaternion Fourier transform and the new multi-frequency band α-rooting concept. Moreover, we introduce a simple measure to evaluate the quality...

Abstract Large foreign object transporting by coal mine conveyor belt may lead to production safety hazards. To reduce accidents during mining, a large detection method based on machine vision is proposed in this paper. An adaptive weighted multi-scale Retinex (MSR) image enhancement algorithm improve the captured quality of line. improved template matching designed combining frame difference a...

this paper investigates the lateral vibration of single-layered graphene sheets based on a new theory called doublet mechanics with a length scale parameter. after a brief reviewing of doublet mechanics fundamentals, a sixth order partial differential equation that governs the lateral vibration of single-layered graphene sheets is derived. using doublet mechanics, the relation between natural f...

m c o R a o p c o t t u f H c a bstract. The images captured by most current digital cameras uffer from a narrow dynamic range that results in poor color fidelity nd perceived image quality. Accordingly, this article proposes an nhanced integrated multi-scale Retinex (IMSR) method in a evice-independent color space, namely, CIELAB, to preserve the ue and obtain a high contrast and naturalness. ...

Abstract In the casting process of steel plate, due to influence rolling equipment and technology, defects such as cracks scratches appear on surface which affect performance plate even cause production accidents. this paper, an automatic detection method for scratch is proposed. Firstly, image decomposed by channel enhanced obtained improved MSR (Multi-Scale Retinex) enhancement algorithm. The...

A model of darkness induction based on a neural filling-in mechanism is proposed. The model borrows principles from both Land's Retinex theory and BCS/FCS filling-in model of Grossberg and colleagues. The main novel assumption of the induction model is that darkness filling-in signals, which originate at luminance borders, are partially blocked when they try to cross other borders. The percenta...

r a m n m l t bstract. In image capture a scene with nonuniform illumination as an influence on the image quality, especially the contrast and etail in dark regions. Generally, the tone curve or histogram of an mage is modified to improve the contrast and detail, yet this is inufficient as the intensity and chromaticity of the illumination vary ith geometric position. Thus, the multi-scaled ret...

In this paper, I show that scales (or hierarchies) have been appealed to in various functions: They have been used to formulate descriptive generalizations (on a single language), and to formulate cross-linguistic generalizations. They have also been used for binary relations, and for implicational relations among more than two items on the scale. This yields four uses of scales (descriptive re...