How to download full-size .jpg's from the SMU's Rowe-Barr Collection of Texas Currency ... (WARNING!
Staircoins
Posts: 2,566 ✭✭✭
It's possible - but requires a little technical know-how - to get full resolution images from the SMU site.
Here's how I did it:
1) Pull up the image of the note and zoom in.
2) Right-click and choose 'Properties', then highlight and copy the URL of the image
3) Paste the URL from the image into the address field of your browser, but take note of three components of the URL
a) DMSCALE
b) DMWIDTH
c) DMHEIGHT
The DMSCALE number will be a percentage of the original size of the image, and the DMWIDTH and DM HEIGHT are the width and height of the image in pixels.
4) To get a different size image, scale up each of the variables in the URL accordingly. Then adjust as needed to get the full image.
For example, look at the following note: Thos. F. Hudson Two Dollars
The URL for the pic as shown is: http://digitalcollections.smu.edu/utils/ajaxhelper/?CISOROOT=tbn&CISOPTR=869&action=2&DMSCALE=20&DMWIDTH=512&DMHEIGHT=512&DMX=0&DMY=0&DMTEXT=&DMROTATE=0
You can safely delete everything after the DMHEIGHT variable. You don't need that info. This leaves: http://digitalcollections.smu.edu/utils/ajaxhelper/?CISOROOT=tbn&CISOPTR=869&action=2&DMSCALE=20&DMWIDTH=512&DMHEIGHT=512
This means that at 20 percent, the image is 512 x 512, like this:
(Notice the right side and lower edge of the image are cut off. This is okay for now.)
So at 100 percent, the image should be 2560 x 2560. In fact, the description on the page says that the image was scanned at 3000 pixels along the long edge. So by adjusting the variables in the URL accordingly, I ended up with the following, which gets the whole note:
http://digitalcollections.smu.edu/utils/ajaxhelper/?CISOROOT=tbn&CISOPTR=869&action=2&DMSCALE=100&DMWIDTH=3000&DMHEIGHT=3000
Simply right-click and 'Save Picture As' to download the full-size image.
So, if you're patient and determined, you can indeed save the hi-res pics!
Good luck!
Mike
Staircoins
Here's how I did it:
1) Pull up the image of the note and zoom in.
2) Right-click and choose 'Properties', then highlight and copy the URL of the image
3) Paste the URL from the image into the address field of your browser, but take note of three components of the URL
a) DMSCALE
b) DMWIDTH
c) DMHEIGHT
The DMSCALE number will be a percentage of the original size of the image, and the DMWIDTH and DM HEIGHT are the width and height of the image in pixels.
4) To get a different size image, scale up each of the variables in the URL accordingly. Then adjust as needed to get the full image.
For example, look at the following note: Thos. F. Hudson Two Dollars
The URL for the pic as shown is: http://digitalcollections.smu.edu/utils/ajaxhelper/?CISOROOT=tbn&CISOPTR=869&action=2&DMSCALE=20&DMWIDTH=512&DMHEIGHT=512&DMX=0&DMY=0&DMTEXT=&DMROTATE=0
You can safely delete everything after the DMHEIGHT variable. You don't need that info. This leaves: http://digitalcollections.smu.edu/utils/ajaxhelper/?CISOROOT=tbn&CISOPTR=869&action=2&DMSCALE=20&DMWIDTH=512&DMHEIGHT=512
This means that at 20 percent, the image is 512 x 512, like this:
(Notice the right side and lower edge of the image are cut off. This is okay for now.)
So at 100 percent, the image should be 2560 x 2560. In fact, the description on the page says that the image was scanned at 3000 pixels along the long edge. So by adjusting the variables in the URL accordingly, I ended up with the following, which gets the whole note:
http://digitalcollections.smu.edu/utils/ajaxhelper/?CISOROOT=tbn&CISOPTR=869&action=2&DMSCALE=100&DMWIDTH=3000&DMHEIGHT=3000
Simply right-click and 'Save Picture As' to download the full-size image.
So, if you're patient and determined, you can indeed save the hi-res pics!
Good luck!
Mike
Staircoins
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P.S. Anyone should feel free to let me know if they need help with an image. I'll be happy to help however I can.
Mike