{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T02:59:51Z","timestamp":1760237991464,"version":"build-2065373602"},"reference-count":27,"publisher":"MDPI AG","issue":"13","license":[{"start":{"date-parts":[[2020,7,7]],"date-time":"2020-07-07T00:00:00Z","timestamp":1594080000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["31971783","31401284"],"award-info":[{"award-number":["31971783","31401284"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Key Technology Research and Development Program of the Ministry of Science and Technology of China","award":["2014BAD06B03"],"award-info":[{"award-number":["2014BAD06B03"]}]},{"name":"Jilin Science and Technology Development Plan","award":["20190302116GX"],"award-info":[{"award-number":["20190302116GX"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this study, an image registration algorithm was applied to calculate the rotation angle of objects when matching images. Some commonly used image feature detection algorithms such as features from accelerated segment test (FAST), speeded up robust features (SURF) and maximally stable extremal regions (MSER) algorithms were chosen as feature extraction components. Comparing the running time and accuracy, the image registration algorithm based on SURF has better performance than the other algorithms. Accurately obtaining the roll angle is one of the key technologies to improve the positioning accuracy and operation quality of agricultural equipment. To acquire the roll angle of agriculture machinery, a roll angle acquisition model based on the image registration algorithm was built. Then, the performance of the model with a monocular camera was tested in the field. The field test showed that the average error of the rolling angle was 0.61\u00b0, while the minimum error was 0.08\u00b0. The field test indicated that the model could accurately obtain the attitude change trend of agricultural machinery when it was working in irregular farmlands. The model described in this paper could provide a foundation for agricultural equipment navigation and autonomous driving.<\/jats:p>","DOI":"10.3390\/s20133799","type":"journal-article","created":{"date-parts":[[2020,7,7]],"date-time":"2020-07-07T10:41:09Z","timestamp":1594118469000},"page":"3799","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Feature Point Registration Model of Farmland Surface and Its Application Based on a Monocular Camera"],"prefix":"10.3390","volume":"20","author":[{"given":"Yang","family":"Li","sequence":"first","affiliation":[{"name":"Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China"},{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China"},{"name":"Graduate School of Agriculture, Kyoto University, Kyoto 6068502, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Dongyan","family":"Huang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China"},{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4644-6273","authenticated-orcid":false,"given":"Jiangtao","family":"Qi","sequence":"additional","affiliation":[{"name":"Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China"},{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sikai","family":"Chen","sequence":"additional","affiliation":[{"name":"Graduate School of Agriculture, Kyoto University, Kyoto 6068502, Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huibin","family":"Sun","sequence":"additional","affiliation":[{"name":"Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China"},{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Huili","family":"Liu","sequence":"additional","affiliation":[{"name":"Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China"},{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Honglei","family":"Jia","sequence":"additional","affiliation":[{"name":"Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China"},{"name":"College of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,7,7]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Lemley, J., Kar, A., Drimbarean, A., and Corcoran, P. 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