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geogeeks-au / maps-for-lost-towns

Georeferencing historic maps through crowdsourcing
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Are higher resolutions available? #6

Closed samwilson closed 8 years ago

samwilson commented 8 years ago

It occurred to me that these JPGs are probably derived from higher-quality images. Is that the case? Can we get access to higher resolutions? A few of the maps I've been looking at are not very readable, and some quite indecipherable.

Here's 150ppi vs 300ppi (at abut the same size): Arthur Head other crop

(other map is this)

keithamoss commented 8 years ago

Not sure - will ask!

keithamoss commented 8 years ago

@samwilson Which items in the SRO catalogue were the two examples above from?

samwilson commented 8 years ago

The first is this (the Freo mole one I've been using as a Commons test), and the second is not part of this collection but just an example of a similar type of document to illustrate that perhaps we're not looking for super-high resolution (as sometimes is wanted for e.g. photographic restoration etc.).

I've not found any in the SRO collection at higher than 150ppi yet. I guess there aren't any. Maybe that's okay for the majority of these anyway; it's just that there are some labels that are illegible at that resolution.

keithamoss commented 8 years ago

Yeah, most are 150ppi. A few 300ppi.