公开(公告)号：US11688057B2

公开(公告)日：2023-06-27

申请号：US17228979

申请日：2021-04-13

Applicant: China University of Mining and Technology

Inventor： Qiqi Kou ,  Deqiang Cheng ,  Yuchen Wang ,  Haixiang Li ,  Liangliang Chen ,  Kai Zhao ,  Rui Gao ,  Xinzhu Fu

IPC: G06V10/75 ,  G06T7/00 ,  G06V10/30 ,  G06V10/74 ,  G06F18/22

CPC classification number: G06T7/001 ,  G06F18/22 ,  G06V10/30 ,  G06V10/751 ,  G06V10/761 ,  G06T2207/10016 ,  G06T2207/20076 ,  G06T2207/30108 ,  G06T2207/30181

Abstract: A method and system for matching image features is applied to mine machine vision. The method includes de-noising an image, performing super-pixel segmentation to obtain a plurality of image blocks, calculating the information entropy of each image block to obtain an image block with information entropy greater than a first preset threshold, extracting feature points of the image block, to obtain the feature point set of the image, using a wavelet method to describe the feature points in the feature point set to obtain a feature point descriptor set, and matching feature points in the feature point set with the feature points of a target image.

公开(公告)号：US09938083B2

公开(公告)日：2018-04-10

申请号：US14917817

申请日：2015-04-21

Applicant: CHINA UNIVERSITY OF MINING AND TECHNOLOGY

Inventor： Jixiong Zhang ,  Qiang Zhang ,  Rui Gao ,  Hao Yan ,  Meng Li

IPC: B65G11/20 ,  B65G65/32 ,  B65G69/00 ,  B65G11/08 ,  B65G69/16

CPC classification number: B65G11/206 ,  B65G11/088 ,  B65G65/32 ,  B65G69/00 ,  B65G69/16 ,  B65G2201/045 ,  B65G2207/28 ,  B65G2814/0211

Abstract: A mechanical rocker-arm type vertical feeding cushioning device, consisting of two identical cushioning units and a box body (7). The two cushioning units are respectively arranged with a certain height difference on the inner side of the box body (7). Each cushioning unit consists of a cushioning mechanism and a fixing hinge mechanism. The cushioning mechanism is composed of a cushioning plate (1), a spring (5) and a balance weight (6). The fixing hinge mechanism is composed of a hinge plate (2), a right angle circular rod (3) and an elastic limiting device (4). The cushioning plate (1) is fixed to the hinge plate (2) via connection holes and using bolts. The hinge plate (2) is welded to the right angle circular rod (3). The elastic limiting device (4) consists of two elastic limiting plates and a hollow iron ring in a welded manner. The right angle circular rod (3) is connected to the elastic limiting device (4) in a sleeved manner via the hollow iron ring of the elastic limiting device (4). An upper end of the spring (5) is connected to the right angle circular rod (3), and the balance weight (6) is suspended at a lower end of the spring (5). Material is fed to the cushioning plates via a feeding pipe, and falls down after being cushioned twice by the cushioning plates (1). The cushioning device repeatedly cushions and recovers under the joint effect of the cushioning plates (1) and the cushioning balances (6).