Image service has bugs, visual problems, and missing icons

[SentientTurtle]

The Image Service has some problems:

Bugs:

• The tech-tier corner icons are wrong on certain types.
  • Example: 'Panther' typeID 22440 (https://images.evetech.net/types/22440/icon?size=64)
  • Displays the "faction" tech-tier, should display the "tier 2" tech-tier.
  • Image Service: In-game:
• Reaction Formulae types use the 'blueprint' background instead of the 'reaction' background
  • Example: 'Thermosetting Polymer Reaction Formula' typeID 57494 (https://images.evetech.net/types/57494/bp?size=64)
  • Image Service: In-game:
  • Possible cause: Reactions appear to use the same logic as blueprints; They are routed under /bp/ image variation.

Visual problems:

• Alpha layer is "premultiplied". The PNG specification requires the alpha to be not-premultiplied, which results in the images being composited incorrectedly when used.
  • Example: 'Large EMP Smartbomb I' typeID 3993 (https://images.evetech.net/types/3993/icon?size=64)
  • (Above, image-service icon & correct icon without background. Below, image-service icon and in-game icon, as composited onto in-game ui)
  • Possible cause: If the image service still uses Lilliput for image processing, this may be a (now-fixed) issue in the library. (https://redirect.github.com/discord/lilliput/pull/170) (credit Beryl Slanjava)
• Blueprints for Ships, Drones, and other "3D Model"/rendered icons have stronger blueprint overlay effect:
  • Example: 'Badger Blueprint' typeID 983 (https://images.evetech.net/types/983/bp?size=64)
  • Image Service: In-game: (Stronger "hologram" effect and blue tint on the image service version)
  • Possible cause: Blueprint icons for "render"/graphic types are 'pre-baked' in the game files. Perhaps the overlay is applied twice? (One when "baked", once by the image service; Doing this manually re-creates the effect shown by the image service.)

Missing icons:

• SKINs (Dedicated issue: Skin type icons are not available on image server #1446)
• Certain corporations e.g. AIR Laboratories (https://images.evetech.net/corporations/1000413/logo?size=64) yield the default-corporation logo (credit Nohus)
• The ship 'Boobook' typeID 64034 misses a 512px render (Dedicated issue: Missing render image for type Boobook #1379) But this appears to match in-game behaviour?

[denalym]

As an addition to the NPC corporation logo issue reported above, examples were noticed yielding a completely blank image. See player corporation 98808614: https://images.evetech.net/corporations/98808614/logo?size=128
This is different behavior from the NPC corporation logo and no clear pattern or reason is apparent.