| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-02-28 |
| タイトル |
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|
タイトル |
Estrus Detection Using Background Image Subtraction Technique in Tie-Stalled Cows |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 著者 |
Higaki, Shogo
Horihata, Kei
Suzuki, Chie
Sakurai, Reina
Suda, Tomoko
Yoshioka, Koji
|
| Abstract |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
In this study, we determined the applicability of the background image subtraction technique to detect estrus in tie-stalled cows. To investigate the impact of the camera shooting direction, webcams were set up to capture the front, top, and rear views of a cow simultaneously. Video recording was performed for a total of ten estrous cycles in six cows. Standing estrus was confirmed by testing at 6 h intervals. From the end of estrus, transrectal ultrasonography was performed every 2 h to confirm ovulation time. Foreground objects (moving objects) were extracted in the videos using the background subtraction technique, and the pixels were counted at each frame of five frames-per-second sequences. After calculating the hourly averaged pixel counts, the change in values was expressed as the pixel ratio (total value during the last 24 h/total value during the last 24 to 48 h). The mean pixel ratio gradually increased at approximately 48 h before ovulation, and the highest value was observed at estrus, regardless of the camera shooting direction. When using front-view videos with an appropriate threshold, estrus was detected with 90% sensitivity and 50% precision. The present method in particular has the potential to be a non-contact estrus detection method for tie-stalled cows. |
|
言語 |
en |
| bibliographic_information |
Animals : an open access journal from MDPI
巻 11,
号 6,
発行日 2021-06-16
|
| 出版者 |
|
|
出版者 |
MDPI |
| item_10002_relation_14 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.3390/ani11061795 |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| item_1730428627434 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
査読あり |
animals-11-01795.pdf (1.2 MB)
