Woodruff St photos

[Derrick J Brashear]

On Sat, 26 Aug 2000, Bob Schmidt wrote:

> 
> Derrick:
> 
> I know Charlie, mysell, and others possessing limited-info-processing
> pieces of hardware, would appreciate a TIFF-to-JPG conversion of the
> five Woodruff Street photos. Thanks!

It is done, same URL now provides choice of TIFF or JPG. 

But it actually shouldn't matter in terms of your hardware: TIFF is just a
graphics format, albeit one typically used at full quality. The
compression would presumably be the relevant thing. One of the
options TIFF provides for compression is (presumably lossy) JPEG
compression, which should offer the same quality and the same compression,
but require more calculation. I had used PackBits compression, which is
run length encoding for those of you who know what I mean, because the 2
best options for TIFF compression have problems: the best, deflate, is not
widely deployed, and the second-best, LZW, is encumbered by a patent held
by Unisys, who apparently reneged on an agreement about enforcement of it.

But none of this is really relevant to Pittsburgh Railways except that I
learned about it while dealing with digital maps and aerial photos while
tracing local rail lines.

-D
-who just came from a large family gathering for my grandmother's 95th
birthday.