甲醛检测方法的研究进展

介绍了甲醛的来源、危害及纺织和装修材料中的限制标准。从纺织印染行业中的甲醛和环境中的甲醛两大方向对甲醛的检测方法进行了综述。纺织品中的甲醛主要介绍了无损甲醛检测方法和微量甲醛检测方法。甲醛的释放环境中甲醛的检测,主要从采样法和便携式检测方法两方面综述了甲醛的检测方法。

Multi-face detection based on downsampling and modified subtractive clustering for color images

This paper presents a multi-face detection method for color images. The method is based on the assumption that faces are well separated from the background by skin color detection. These faces can be located by the proposed method which modifies the subtractive clustering. The modified clustering algorithm proposes a new definition of distance for multi-face detection, and its key parameters can be predetermined adaptively by statistical information of face objects in the image. Downsampling is employed to reduce the computation of clustering and speed up the process of the proposed method. The effectiveness of the proposed method is illustrated by three experiments.