RANGE ACQUISITION IN BINOCULAR 3-D COMPUTER VISION USING EDGE-BASED HIERARCHICAL MATCHING

This paper deals with a binocular 3-D computer vision system based on the hierarchicalmatching of edge features, Frei and Chen operator is used to extract the edge. The averagegradients of an image obtained by two isotropic operators are non-equal quantized andthresholded in an angle, Edge features are extracted after passing a preemphasis transferfunction which can equalize, the noise affection. Binary edge images are decomposed into apyramid structure which is stored and searched using llliffe's location method. Corre-sponding points are used to determine the range data using triangulation based on an improvedTrivedi's formula. In calibration the authors set the optical axes of the two cameras parallelto simplify the calculation, A 3 rd order Householder transform is used to solve the compati-ble coupled equations.     

北京妙峰山玫瑰花头香成分的分析研究

对我国有生产意义的玫瑰花重要品种妙峰山玫瑰花的头香成份做了初步分析。鉴定了其中53种化合物,有22种是过去在玫瑰精(净)油中很少见到,这对改进玫瑰型的香料香精的研究将有一定的作用。在收集低浓度的水溶液样品时,我们采用低温收集和吸附富集联用收到较好的效果,为普遍推广对稀有的、含低浓度头香的样品收集分析提供了一种较为方便的方法。     

试论“温州模式”的支柱——十万购销员

一温州商品经济迅速发展有种种原因,其中最主要原因就是拥有一支十万人的购销员队伍。“温州模式”亦即温州农村经济发展的路子,概括地说就是以十万购销员为支柱,以家庭工业和专业市场为产销活动基地,广开生产门路,发展商品经济的特殊途径。可取之处在于发挥农民参与流通、疏通流通的作用,促进社会主义生产发展;在于按商品生产的常规,迅速发展了社会主义的农村经济。