Method for recognizing a liquid level using temporal variation in the distribution of the pixel concentration in images, and apparatus for recognizing a liquid level using same
The present invention relates to a method for recognizing a liquid level using temporal variation in the distribution of the pixel concentration in images, and to an apparatus for recognizing a liquid level using same. The method comprises: performing gray-image processing on the image captured so a...
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| creator | YOO MIN WOOK KIM WON LEE CHAN JOO LEE HEA EUN KWON SUNG ILL KIM DONG GU |
| description | The present invention relates to a method for recognizing a liquid level using temporal variation in the distribution of the pixel concentration in images, and to an apparatus for recognizing a liquid level using same. The method comprises: performing gray-image processing on the image captured so as to contain a liquid level and digitizing each pixel distributed in the X-axis direction and the Y-axis direction in accordance with the concentration of the pixel; extracting only the image for the X-axis direction scale zone on a watermark; adding numerical values of pixels in the Y-axis direction in the extracted image to generate histogram data for the Y-axis direction of pixels; comparing histogram data of images captured before and after a certain time; determining whether or not a difference higher than a preset incremental value occurs in the histogram data; and recognizing, as a liquid level, the Y-axis direction position (height) of the pixel from which the difference higher thanthe preset incremental va |
| format | Patent |
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The method comprises: performing gray-image processing on the image captured so as to contain a liquid level and digitizing each pixel distributed in the X-axis direction and the Y-axis direction in accordance with the concentration of the pixel; extracting only the image for the X-axis direction scale zone on a watermark; adding numerical values of pixels in the Y-axis direction in the extracted image to generate histogram data for the Y-axis direction of pixels; comparing histogram data of images captured before and after a certain time; determining whether or not a difference higher than a preset incremental value occurs in the histogram data; and recognizing, as a liquid level, the Y-axis direction position (height) of the pixel from which the difference higher thanthe preset incremental va</description><language>chi ; eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ; MEASURING ; MEASURING ANGLES ; MEASURING AREAS ; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS ; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS ; MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL ; METERING BY VOLUME ; PHYSICS ; TESTING</subject><creationdate>2011</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110824&DB=EPODOC&CC=CN&NR=102165288A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,309,781,886,25569,76552</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20110824&DB=EPODOC&CC=CN&NR=102165288A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YOO MIN WOOK</creatorcontrib><creatorcontrib>KIM WON</creatorcontrib><creatorcontrib>LEE CHAN JOO</creatorcontrib><creatorcontrib>LEE HEA EUN</creatorcontrib><creatorcontrib>KWON SUNG ILL</creatorcontrib><creatorcontrib>KIM DONG GU</creatorcontrib><title>Method for recognizing a liquid level using temporal variation in the distribution of the pixel concentration in images, and apparatus for recognizing a liquid level using same</title><description>The present invention relates to a method for recognizing a liquid level using temporal variation in the distribution of the pixel concentration in images, and to an apparatus for recognizing a liquid level using same. 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The method comprises: performing gray-image processing on the image captured so as to contain a liquid level and digitizing each pixel distributed in the X-axis direction and the Y-axis direction in accordance with the concentration of the pixel; extracting only the image for the X-axis direction scale zone on a watermark; adding numerical values of pixels in the Y-axis direction in the extracted image to generate histogram data for the Y-axis direction of pixels; comparing histogram data of images captured before and after a certain time; determining whether or not a difference higher than a preset incremental value occurs in the histogram data; and recognizing, as a liquid level, the Y-axis direction position (height) of the pixel from which the difference higher thanthe preset incremental va</abstract><oa>free_for_read</oa></addata></record> |
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| language | chi ; eng |
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| subjects | CALCULATING COMPUTING COUNTING IMAGE DATA PROCESSING OR GENERATION, IN GENERAL MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUIDLEVEL METERING BY VOLUME PHYSICS TESTING |
| title | Method for recognizing a liquid level using temporal variation in the distribution of the pixel concentration in images, and apparatus for recognizing a liquid level using same |
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