The present investigation was performed to determine if the features selected through Optimum Index Factor （OIF） could provide improved classification accuracy of the various categories on the satellite images of th...The present investigation was performed to determine if the features selected through Optimum Index Factor （OIF） could provide improved classification accuracy of the various categories on the satellite images of the individual years as well as stacked images of two different years as compared to all the features considered together. Further, in order to determine if there occurs increase in the classification accuracy of the different categories with corresponding increase in the OIF values of the features extracted from both the individual years＇ and stacked images, we performed linear regression between the producer＇s accuracy （PA） of the various categories with the OIF values of the different combinations of the features. The investigations demonstrated that there occurs significant improvement in the PA of two impervious categories viz. moderate built-up and low density built-up determined from the classification of the bands and principal components associated with the highest OIF value as compared to all the bands and principal components for both the individual years＇ and stacked images respectively. Regression analyses exhibited positive trends between the regression coeffi- cients and OIF values for the various categories determined for the individual years＇ and stacked images respectively signifying the prevalence of direct relationship between the increase in the information content with corresponding increase in the OIF values. The research proved that features extracted through OIF from both the individual years＇ and stacked images are capable of providing significantly improved PA as compared to all the features pooled together.展开更多
华为技术有限公司（“华为”）日前宣布，其智能光网络在由光互联论坛OIF（Optical Internetworking Forum）组织的全球范围智能光网络互联互通测试中与中国电信、法国电信、意大利电信等圆满完成合作，成为唯一完成所有规定测试项目的...华为技术有限公司（“华为”）日前宣布，其智能光网络在由光互联论坛OIF（Optical Internetworking Forum）组织的全球范围智能光网络互联互通测试中与中国电信、法国电信、意大利电信等圆满完成合作，成为唯一完成所有规定测试项目的设备供应商。本次OIF测试成果在ECOC（European Conference and Exhibition on Optical Communication Conference）通信展会上进行了展示。展开更多
文摘The present investigation was performed to determine if the features selected through Optimum Index Factor （OIF） could provide improved classification accuracy of the various categories on the satellite images of the individual years as well as stacked images of two different years as compared to all the features considered together. Further, in order to determine if there occurs increase in the classification accuracy of the different categories with corresponding increase in the OIF values of the features extracted from both the individual years＇ and stacked images, we performed linear regression between the producer＇s accuracy （PA） of the various categories with the OIF values of the different combinations of the features. The investigations demonstrated that there occurs significant improvement in the PA of two impervious categories viz. moderate built-up and low density built-up determined from the classification of the bands and principal components associated with the highest OIF value as compared to all the bands and principal components for both the individual years＇ and stacked images respectively. Regression analyses exhibited positive trends between the regression coeffi- cients and OIF values for the various categories determined for the individual years＇ and stacked images respectively signifying the prevalence of direct relationship between the increase in the information content with corresponding increase in the OIF values. The research proved that features extracted through OIF from both the individual years＇ and stacked images are capable of providing significantly improved PA as compared to all the features pooled together.
文摘华为技术有限公司（“华为”）日前宣布，其智能光网络在由光互联论坛OIF（Optical Internetworking Forum）组织的全球范围智能光网络互联互通测试中与中国电信、法国电信、意大利电信等圆满完成合作，成为唯一完成所有规定测试项目的设备供应商。本次OIF测试成果在ECOC（European Conference and Exhibition on Optical Communication Conference）通信展会上进行了展示。
