投稿時間:2022-12-31 17:16:47 RSSフィード2022-12-31 17:00 分まとめ(20件)

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python	Pythonタグが付けられた新着投稿 - Qiita	Dependency Injectionをdjangoプロジェクトに導入してみる	https://qiita.com/alingogo/items/276896b5c1d737e33ead	dependencyinjection	2022-12-31 16:45:38
python	Pythonタグが付けられた新着投稿 - Qiita	【初めてのDjango】mysqlclientとは？Django Appの作成で遭遇したエラー3件の解決方法！	https://qiita.com/Ryo-0131/items/47b83e1fb4d7b1b7b62c	client	2022-12-31 16:38:02
python	Pythonタグが付けられた新着投稿 - Qiita	画像内の不要物を消す、インペインティングの技術　crfill	https://qiita.com/john-rocky/items/f68bb625417fe799dbbe	gitclonesinglebranch	2022-12-31 16:36:35
python	Pythonタグが付けられた新着投稿 - Qiita	ろうとるがPythonを扱う、、（その６：ネットワーク内の機器検索）	https://qiita.com/infinite1oop/items/afc3b9a3990cbf845c2d	複数	2022-12-31 16:03:16
AWS	AWSタグが付けられた新着投稿 - Qiita	【初心者】Amazon SageMaker BlazingTextアルゴリズムを試してみた	https://qiita.com/zumax/items/8b2bca328c73f1e8ee39	amazon	2022-12-31 16:17:49
Docker	dockerタグが付けられた新着投稿 - Qiita	Oracle Cloudでiptables-nftを設定	https://qiita.com/fasteny/items/1877e8efd5bfa6740a3a	tciptablesrulesvsudoetcin	2022-12-31 16:49:47
Docker	dockerタグが付けられた新着投稿 - Qiita	Dockerで始めるgRPC	https://qiita.com/sugiyama404/items/9e4f34c6a21062b2746f	docker	2022-12-31 16:33:41
Docker	dockerタグが付けられた新着投稿 - Qiita	GCE Container Optimize OSのtoolbox上でdocker on dockerする	https://qiita.com/junpayment/items/464fd466deade1efe172	dockerondocker	2022-12-31 16:12:43
golang	Goタグが付けられた新着投稿 - Qiita	【小ネタ】AWS CDK を使って ECS に LoadBalancer に独自ドメインを設定した話	https://qiita.com/ijufumi/items/4f4207a0f6316d3b6ff1	awscdk	2022-12-31 16:49:55
golang	Goタグが付けられた新着投稿 - Qiita	Dockerで始めるgRPC	https://qiita.com/sugiyama404/items/9e4f34c6a21062b2746f	docker	2022-12-31 16:33:41
技術ブログ	Developers.IO	イベント駆動できるようになった Storage Transfer Service で、S3 から GCS にファイル転送してみた。	https://dev.classmethod.jp/articles/sts-event-driven-transfer-s3-to-gcs/	storagetransferservice	2022-12-31 07:39:22
技術ブログ	Developers.IO	Systems Manager ステートマネージャーと User data の機能の違いについて考えてみる	https://dev.classmethod.jp/articles/systemsmanager-statemanager-userdata/	systemsmanager	2022-12-31 07:30:05
海外TECH	DEV Community	Mastering OpenCV: A Comprehensive Introduction to Computer Vision with Python	https://dev.to/anurag629/mastering-opencv-a-comprehensive-introduction-to-computer-vision-with-python-27j1	Mastering OpenCV A Comprehensive Introduction to Computer Vision with PythonOpenCV Open Source Computer Vision is a free and open source library of computer vision and machine learning algorithms that has gained widespread popularity in the field of artificial intelligence It is widely used in a variety of applications including object detection image classification and video analysis In this article blog we will explore the basics of OpenCV and learn how to use it to perform common tasks in computer vision We will cover topics such as reading and displaying images accessing and modifying pixel values converting between image formats and applying image filters We will also learn about more advanced techniques such as detecting edges in an image and extracting features using SIFT and SURF By the end of this article you will have a solid foundation in OpenCV and be able to use it to build your own computer vision projects Reading and displaying an image You can use the cv imread function to read an image from a file and the cv imshow function to display the image on the screen For example import cv Read an image from a fileimg cv imread image jpg Display the imagecv imshow image img cv waitKey cv destroyAllWindows Accessing and modifying pixel values You can access and modify the pixel values of an image using the numpy array representation of the image For example import cvimport numpy as np Read an image from a fileimg cv imread image jpg Access the pixel values of the imagerows cols channels img shapefor row in range rows for col in range cols Access the blue green and red channels of the pixel b g r img row col Modify the pixel values img row col g Display the modified imagecv imshow image img cv waitKey cv destroyAllWindows Converting between image formats You can use the cv cvtColor function to convert an image from one color space to another For example import cv Read an image from a fileimg cv imread image jpg Convert the image from BGR to grayscalegray cv cvtColor img cv COLOR BGRGRAY Display the grayscale imagecv imshow image gray cv waitKey cv destroyAllWindows Resizing an image You can use the cv resize function to change the size of an image For example import cv Read an image from a fileimg cv imread image jpg Resize the image to a different sizeresized img cv resize img Display the resized imagecv imshow image resized img cv waitKey cv destroyAllWindows Cropping an image You can use NumPy slicing to crop an image to a desired region For example import cvimport numpy as np Read an image from a fileimg cv imread image jpg Crop the image to a specific regioncropped img img Display the cropped imagecv imshow image cropped img cv waitKey cv destroyAllWindows Drawing on an image You can use the cv line cv rectangle cv circle and other drawing functions to draw shapes and text on an image For example import cvimport numpy as np Read an image from a fileimg cv imread image jpg Draw a red line on the imagecv line img img shape img shape thickness Draw a green rectangle on the imagecv rectangle img thickness Draw a blue circle on the imagecv circle img thickness Display the modified imagecv imshow image img cv waitKey cv destroyAllWindows Applying image filters You can use the cv filterD function to apply various image filters to an image For example import cvimport numpy as np Read an image from a fileimg cv imread image jpg Define a kernel for the blur filterkernel np ones np float Apply the blur filter to the imageblurred img cv filterD img kernel Display the filtered imagecv imshow image blurred img cv waitKey cv destroyAllWindows Detecting edges in an image You can use the cv Canny function to detect edges in an image For example import cv Read an image from a fileimg cv imread image jpg Convert the image to grayscalegray cv cvtColor img cv COLOR BGRGRAY Detect edges in the imageedges cv Canny gray Display the edge mapcv imshow image edges cv waitKey cv destroyAllWindows Extracting features from an image You can use feature extraction techniques such as SIFT Scale Invariant Feature Transform or SURF Speeded Up Robust Feature to identify keypoints and descriptors in an image For example import cv Read an image from a fileimg cv imread image jpg Detect SIFT features in the imagesift cv xfeaturesd SIFT create keypoints descriptors sift detectAndCompute img None Draw the keypoints on the imageimg keypoints cv drawKeypoints img keypoints None Display the image with keypointscv imshow image img keypoints cv waitKey cv destroyAllWindows Thank you all for reading and following me and my article I hope that you have learned a lot about the capabilities of OpenCV and how it can be used to build computer vision projects in Python To summarize we covered topics such as reading and displaying images accessing and modifying pixel values converting between image formats and applying image filters We also looked at more advanced techniques such as detecting edges in an image and extracting features using SIFT and SURF Some key points to remember are that OpenCV is a powerful and versatile library for computer vision that it is easy to use and can be integrated into various projects and that it has a rich set of features and functions for image processing analysis and machine learning If you have any questions or want to learn more about OpenCV feel free to reach out to me or explore the resources that I provided I encourage you to continue learning and experimenting with OpenCV and I hope that you will be inspired to build your own exciting computer vision projects Thank you again and I hope you have a great day	2022-12-31 07:45:33
海外ニュース	Japan Times latest articles	Hiroshi Nakaso positioned as front-runner to lead Bank of Japan, survey shows	https://www.japantimes.co.jp/news/2022/12/31/business/boj-successor-hiroshi-nakaso/	Hiroshi Nakaso positioned as front runner to lead Bank of Japan survey showsThe next governor is expected to face calls for careful communication with the market as there are expectations that the BOJ could make further policy	2022-12-31 16:22:11
ニュース	BBC News - Home	Covid: England to require negative test for arrivals from China	https://www.bbc.co.uk/news/uk-64130655?at_medium=RSS&at_campaign=KARANGA	chinese	2022-12-31 07:16:32
ニュース	BBC News - Home	Barbara Walters: Trailblazing US news anchor dies aged 93	https://www.bbc.co.uk/news/world-us-canada-64131414?at_medium=RSS&at_campaign=KARANGA	evening	2022-12-31 07:46:52
北海道	北海道新聞	抽せん会、３年ぶり入場制限なし　年末ジャンボ宝くじ	https://www.hokkaido-np.co.jp/article/782581/	年末ジャンボ宝くじ	2022-12-31 16:09:41
北海道	北海道新聞	ＲＣＥＰ、日中貿易を後押し　発効１年、通商の覇権争い激化	https://www.hokkaido-np.co.jp/article/782588/	引き下げ	2022-12-31 16:22:00
北海道	北海道新聞	バレー古賀、西田の両選手が結婚　男女日本代表の主力同士	https://www.hokkaido-np.co.jp/article/782586/	古賀紗理那	2022-12-31 16:18:08
IT	週刊アスキー	あふれるバター感「白いダースプレミアム＜レーズンバターサンド味＞」など、新年は高級感あるダースがお楽しみ	https://weekly.ascii.jp/elem/000/004/118/4118230/	期間限定	2022-12-31 16:40:00