File:Comparison between JPEG, JPEG 2000 and JPEG XR.png
預覽大小：800 × 240 像素。 其他解析度：640 × 192 像素 | 1,600 × 480 像素。
原始檔案 （1,600 × 480 像素，檔案大小：1.19 MB，MIME 類型：image/png）
摘要
| 描述 |
English: This is a comparison between JPEG 2000, JPEG XR, and JPEG. I used Paint.NET and IrfanView to create this picture. The original photo is cropped out of a very large JPEG and is saved as a PNG file. Then, this PNG version is converted to each of the aforementioned picture file formats. Each photo is 400x480 in size. The basic JPEG is the worst at compression but JPEG XR and JPEG 2000 are very similar. The JPEG 2000 is a bit on the brighter side and tends to do a better job at blending the pixels. The black areas in the JPEG XR develop a checkerboard pattern when zoomed in. |
| 日期 | (UTC) |
| 來源 | File:Paris Night.jpg |
| 作者 |
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原始上傳日誌
The original description page was here. All following user names refer to en.wikipedia.
- 2012-10-31 21:36 JeffyP 1600×480× (1166145 bytes) Always small with pngout :P
- 2011-07-13 05:49 Skubasteve834 1600×480× (1195529 bytes) Used OptimizePNG to make the PNG file go from 1.8MB to 1.1MB to save Wikipedia bandwidth.
- 2011-03-23 02:44 Skubasteve834 1600×480× (1936204 bytes) moved lettering
- 2011-03-22 22:05 Skubasteve834 1600×480× (1936204 bytes) {{Information |Description = This is a comparison between Jpeg XR, Jpeg 2000, and Jpeg. I tried to compress the photos as close as possible to 7KB but paint.net and infranview are not exact. The basic jpeg was the worst at compression but Jpeg XR and
- 2011-03-22 22:01 Skubasteve834 1600×480× (1936204 bytes) {{Information |Description = This is a comparison between Jpeg 2000, Jpeg XR, and Jpeg. I used paint.net and infranview to create this picture. The basic jpeg was the worst at compression but Jpeg XR and 2000 were very similar. The Jpeg 2000 is a b
檔案歷史
點選日期/時間以檢視該時間的檔案版本。
| 日期/時間 | 縮圖 | 尺寸 | 使用者 | 備註 | |
|---|---|---|---|---|---|
| 目前 | 2019年4月2日 (二) 11:05 | | 1,600 × 480（1.19 MB） | Kulandru mor | updated JPEG sample using decoder post-processing described in A. Nosratinia: Enhancement of JPEG-Compressed Images by Re-application of JPEG (https://utdallas.edu/~aria/papers/vlsisp99.pdf) |
| 2019年4月2日 (二) 10:04 |  | 1,600 × 480（1.14 MB） | Kulandru mor | updated JPEG sample using mozjpeg version 3.4.0 | |
| 2014年5月27日 (二) 03:14 |  | 1,600 × 480（1.11 MB） | OgreBot | (BOT): Reverting to most recent version before archival | |
| 2014年5月27日 (二) 03:14 |  | 1,600 × 480（1.14 MB） | OgreBot | (BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2011-07-13 05:49:02 by Skubasteve834 | |
| 2014年5月27日 (二) 03:14 |  | 1,600 × 480（1.85 MB） | OgreBot | (BOT): Uploading old version of file from en.wikipedia; originally uploaded on 2011-03-22 22:01:03 by Skubasteve834 | |
| 2014年5月23日 (五) 07:42 |  | 1,600 × 480（1.11 MB） | FastilyClone | from w:File:Comparison between JPEG, JPEG 2000 and JPEG XR.png (CM) |
檔案用途
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