Quick estimates of root length, using a video image analyzer
A black and white video camera and an image analyzer were used to measure the length of oak roots from which soil had been washed. The image analyzer is an automated intersect counter which uses the same basis for length estimation as the modified line intersect method. The roots were arranged withi...
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| Veröffentlicht in: | Canadian journal of forest research 1989-03, Vol.19 (3), p.335-340 |
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| container_title | Canadian journal of forest research |
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| creator | Cunningham, M Adams, M.B Luxmoore, R.J Post, W.M DeAngelis, D.L |
| description | A black and white video camera and an image analyzer were used to measure the length of oak roots from which soil had been washed. The image analyzer is an automated intersect counter which uses the same basis for length estimation as the modified line intersect method. The roots were arranged within a 13.5 × 19 cm rectangle on clear plastic sheets and photocopied (dry process), then the lengths of the photocopied root images were measured with the video system. Two measurements were made on each photocopy, with a 90° rotation of the photocopy made between the two measurements. The two measurements were summed to obtain an index of root length. The automated system tested had insufficient resolution to detect very fine roots ( |
| doi_str_mv | 10.1139/x89-050 |
| format | Article |
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2
= 0.92) with the modified line intersect method. Other root samples may require enhanced system resolution to achieve adequate correlation between methods. Once the video method has been calibrated, length of root samples may be determined up to 8 times faster than by the line intersect method.</description><identifier>ISSN: 0045-5067</identifier><identifier>EISSN: 1208-6037</identifier><identifier>DOI: 10.1139/x89-050</identifier><identifier>CODEN: CJFRAR</identifier><language>eng</language><publisher>Ottawa, Canada: NRC Research Press</publisher><subject>Agronomy. Soil science and plant productions ; Biological and medical sciences ; Economic plant physiology ; estimation ; Fundamental and applied biological sciences. Psychology ; General agronomy. Plant production ; image analysis ; length ; Morphology. Anatomy. Histology. Cytology ; Quercus alba ; roots ; Soil-plant relationships. Soil fertility ; Soil-plant relationships. Soil fertility. Fertilization. Amendments ; video recorders</subject><ispartof>Canadian journal of forest research, 1989-03, Vol.19 (3), p.335-340</ispartof><rights>1990 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c311t-fc95afc2a23868a68199a390c9c6093adb86798307e97938fa5d4ff3ff16525a3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,777,781,27905,27906</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=6630796$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Cunningham, M</creatorcontrib><creatorcontrib>Adams, M.B</creatorcontrib><creatorcontrib>Luxmoore, R.J</creatorcontrib><creatorcontrib>Post, W.M</creatorcontrib><creatorcontrib>DeAngelis, D.L</creatorcontrib><title>Quick estimates of root length, using a video image analyzer</title><title>Canadian journal of forest research</title><addtitle>Revue canadienne de recherche forestière</addtitle><description>A black and white video camera and an image analyzer were used to measure the length of oak roots from which soil had been washed. The image analyzer is an automated intersect counter which uses the same basis for length estimation as the modified line intersect method. The roots were arranged within a 13.5 × 19 cm rectangle on clear plastic sheets and photocopied (dry process), then the lengths of the photocopied root images were measured with the video system. Two measurements were made on each photocopy, with a 90° rotation of the photocopy made between the two measurements. The two measurements were summed to obtain an index of root length. The automated system tested had insufficient resolution to detect very fine roots (<0.3 mm); however, the video method was found to be linearly correlated (R
2
= 0.92) with the modified line intersect method. Other root samples may require enhanced system resolution to achieve adequate correlation between methods. Once the video method has been calibrated, length of root samples may be determined up to 8 times faster than by the line intersect method.</description><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Economic plant physiology</subject><subject>estimation</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>General agronomy. Plant production</subject><subject>image analysis</subject><subject>length</subject><subject>Morphology. Anatomy. Histology. Cytology</subject><subject>Quercus alba</subject><subject>roots</subject><subject>Soil-plant relationships. Soil fertility</subject><subject>Soil-plant relationships. Soil fertility. Fertilization. Amendments</subject><subject>video recorders</subject><issn>0045-5067</issn><issn>1208-6037</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNp9z09LxDAQh-EgCq6r-BHMQRDE6qTTpgl4kcV_sCCiey5jmnSrtV2Srrh-eiMVj57m8vBjXsYOBZwLgfriU-kEcthiE5GCSiRgsc0mAFme5CCLXbYXwisAoESYsMvHdWPeuA1D806DDbx33Pf9wFvb1cPyjK9D09Wc-EdT2Z5HVFtOHbWbL-v32Y6jNtiD3ztli5vr59ldMn-4vZ9dzRODQgyJMzonZ1JKUUlFUgmtCTUYbSRopOpFyUIrhMLqQqNylFeZc-ickHmaE07ZybhrfB-Ct65c-fiJ35QCyp_oMkaXMTrK41GuKBhqnafONOGPy9hcaBnZ6cg6b7wNlrxZ_rN5NGJHfUm1j3uLpxQEQiqlkFmG36WFbD8</recordid><startdate>19890301</startdate><enddate>19890301</enddate><creator>Cunningham, M</creator><creator>Adams, M.B</creator><creator>Luxmoore, R.J</creator><creator>Post, W.M</creator><creator>DeAngelis, D.L</creator><general>NRC Research Press</general><general>National Research Council of Canada</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19890301</creationdate><title>Quick estimates of root length, using a video image analyzer</title><author>Cunningham, M ; Adams, M.B ; Luxmoore, R.J ; Post, W.M ; DeAngelis, D.L</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c311t-fc95afc2a23868a68199a390c9c6093adb86798307e97938fa5d4ff3ff16525a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1989</creationdate><topic>Agronomy. Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>Economic plant physiology</topic><topic>estimation</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agronomy. Plant production</topic><topic>image analysis</topic><topic>length</topic><topic>Morphology. Anatomy. Histology. Cytology</topic><topic>Quercus alba</topic><topic>roots</topic><topic>Soil-plant relationships. Soil fertility</topic><topic>Soil-plant relationships. Soil fertility. Fertilization. Amendments</topic><topic>video recorders</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Cunningham, M</creatorcontrib><creatorcontrib>Adams, M.B</creatorcontrib><creatorcontrib>Luxmoore, R.J</creatorcontrib><creatorcontrib>Post, W.M</creatorcontrib><creatorcontrib>DeAngelis, D.L</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>Canadian journal of forest research</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Cunningham, M</au><au>Adams, M.B</au><au>Luxmoore, R.J</au><au>Post, W.M</au><au>DeAngelis, D.L</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quick estimates of root length, using a video image analyzer</atitle><jtitle>Canadian journal of forest research</jtitle><addtitle>Revue canadienne de recherche forestière</addtitle><date>1989-03-01</date><risdate>1989</risdate><volume>19</volume><issue>3</issue><spage>335</spage><epage>340</epage><pages>335-340</pages><issn>0045-5067</issn><eissn>1208-6037</eissn><coden>CJFRAR</coden><abstract>A black and white video camera and an image analyzer were used to measure the length of oak roots from which soil had been washed. The image analyzer is an automated intersect counter which uses the same basis for length estimation as the modified line intersect method. The roots were arranged within a 13.5 × 19 cm rectangle on clear plastic sheets and photocopied (dry process), then the lengths of the photocopied root images were measured with the video system. Two measurements were made on each photocopy, with a 90° rotation of the photocopy made between the two measurements. The two measurements were summed to obtain an index of root length. The automated system tested had insufficient resolution to detect very fine roots (<0.3 mm); however, the video method was found to be linearly correlated (R
2
= 0.92) with the modified line intersect method. Other root samples may require enhanced system resolution to achieve adequate correlation between methods. Once the video method has been calibrated, length of root samples may be determined up to 8 times faster than by the line intersect method.</abstract><cop>Ottawa, Canada</cop><pub>NRC Research Press</pub><doi>10.1139/x89-050</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0045-5067 |
| ispartof | Canadian journal of forest research, 1989-03, Vol.19 (3), p.335-340 |
| issn | 0045-5067 1208-6037 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_6630796 |
| source | Alma/SFX Local Collection |
| subjects | Agronomy. Soil science and plant productions Biological and medical sciences Economic plant physiology estimation Fundamental and applied biological sciences. Psychology General agronomy. Plant production image analysis length Morphology. Anatomy. Histology. Cytology Quercus alba roots Soil-plant relationships. Soil fertility Soil-plant relationships. Soil fertility. Fertilization. Amendments video recorders |
| title | Quick estimates of root length, using a video image analyzer |
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