Add notes for 2023-05-18

content/posts/2023-05.md

@@ -62,4 +62,28 @@ done < <(csvcut -c 1 ~/Downloads/2023-04-26\ CGIAR\ non-AGROVOC\ subjects.csv |
 - Export the entire CGSpace to check for missing Initiative collection mappings
   - I also adding missing regions
 
+## 2023-05-16
+
+- I finally cleaned up and published my latest evaluation of [JPEG, WebP, and AVIF](https://alanorth.github.io/improved-dspace-thumbnails/evaluating-jpeg-webp-avif.html)
+  - I [filed an issue on DSpace](https://github.com/DSpace/DSpace/issues/8849) to track this
+
+## 2023-05-17
+
+- Re-sync CGSpace to DSpace 7 Test
+- I came up with a naive patch to use WebP instead of JPEG in the DSpace ImageMagick filter, and it works, but doesn't replace existing JPEGs... hmmm
+  - Also, it does PDF to WebP to WebP haha
+
+## 2023-05-18
+
+- I created a [pull request](https://github.com/DSpace/DSpace/pull/8850) to improve some minor documentation, typo, and logic issues in the DSpace ImageMagick thumbnail filters
+- I realized that there is a quick win to the generation loss issue with ImageMagickThumbnailFilter
+  - We can use ImageMagick's internal MIFF instead of JPEG when writing the intermediate image
+  - According to the [libvips author PNG is very slow](https://github.com/libvips/libvips/issues/571)!
+  - I re-ran my `generation-loss.sh` script using MIFF and found that it had essentially the same results as PNG, which is about 1.1 points higher on the ssimulacra2 (v2.1) scoring scale
+  - Also, according to my tests with the cosmo rusage.com utility, I see that MIFF is indeed much faster than PNG
+  - I updated my pull request to add this quick win
+- Weekly CG Core types meeting
+  - Low attendance so I just kept working on the spreadsheet
+  - We are at the stage of voting on definitions
+
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