Command to Center an Image with Blurred Background Edges
This article is a translated version of my original post on Qiita. Original (Japanese): https://qiita.com/segur/items/6fc88aef0db4cec4c90e
Recently, I created an augmented reality (AR) piece like the one described below.
While strolling around Sakae in Nagoya, I discovered the "Peeing Boy" statue!
— segur(γγγ )@ι½εΈARγ¨γ³γΈγγ’ (@segur_vita) November 19, 2023
However, it seems to lack a fountain feature...
So, I created an AR fountain!
If you can visit the site, experience AR from here!
π https://t.co/A24c9oMKBa
The location is near the lion's mouth entrance of Nagoya Mitsukoshi! #STYLY #AR #Nagoya #Sakae⦠pic.twitter.com/HQBhbxZTTC
When creating the thumbnail for this piece, I applied the following image transformation!
| Image | |
|---|---|
| Input |  |
| Output |  |
In essence, when resizing a vertically long image to 1920x1080, the idea was to fill the margins with an enlarged, blurred version of the input image!
Process Overview
Here's the step-by-step process for the above image transformation!
- Resize the input image's width to 1920, apply a blur effect, and save it as
background.jpg. - Resize the input image's height to 1080 and save it as
foreground.jpg. - Use
background.jpgas the background, and centerforeground.jpgon it to create the final output.
Commands
Here's the command I used! I utilized ImageMagick for the task.
magick convert input.jpg -resize 1920x -blur 0x8 -gravity north -extent 1920x1080 background.jpg
magick convert input.jpg -resize x1080 foreground.jpg
magick convert background.jpg foreground.jpg -gravity center -composite output.jpg
Note that the version of ImageMagick used was 7.1.
This image transformation worked perfectly on both Windows and macOS!
In Conclusion
For creating this article, I referred to the following page. Thank you for the insightful information.
- https://qiita.com/yoya/items/b6926f01b7cb90217e07
![](\"https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/221845/3e327215-73c7-54a9-3d21-e1cc8e33099e.jpeg\")
|\n|Output| ![](\"https://qiita-image-store.s3.ap-northeast-1.amazonaws.com/0/221845/3fd4846e-e34f-9704-58f4-b3add3a3fc3d.jpeg\")
|\n\nIn essence, when resizing a vertically long image to 1920x1080, the idea was to fill the margins with an enlarged, blurred version of the input image!\n\n# Process Overview\n\nHere's the step-by-step process for the above image transformation!\n\n1. Resize the input image's width to 1920, apply a blur effect, and save it as `background.jpg`.\n2. Resize the input image's height to 1080 and save it as `foreground.jpg`.\n3. Use `background.jpg` as the background, and center `foreground.jpg` on it to create the final output.\n\n# Commands\n\nHere's the command I used! I utilized ImageMagick for the task.\n\n```bat\nmagick convert input.jpg -resize 1920x -blur 0x8 -gravity north -extent 1920x1080 background.jpg\nmagick convert input.jpg -resize x1080 foreground.jpg\nmagick convert background.jpg foreground.jpg -gravity center -composite output.jpg\n```\n\nNote that the version of ImageMagick used was 7.1.\n\nThis image transformation worked perfectly on both Windows and macOS!\n\n# In Conclusion\n\nFor creating this article, I referred to the following page. Thank you for the insightful information.\n\n- https://qiita.com/yoya/items/b6926f01b7cb90217e07";
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