nelsondl at pacbell
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Mar 30, 2008, 11:30 AM
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[Orthopod] Please edit your images before you post
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Members of this List should be careful of the images that they post. It is a courtesy to your fellow List Members to edit your photos, so that they are as small as possible. Many members pay by the time they are online or by the amount of bytes that they download.
A recent posting had this image:
It is 55 KB, it in color, and is 14" by 10", and is mostly blank space. It can be edited to:
This image is only 8 KB, is in black and white, is 5" high, the tilt of the image has been removed, and most of the blank space has been removed. Yet 100% of the data is retained.
If it is cropped, it would look like:
It looks even better, while losing only a bit of the edges of the image.
Many images can also be improved by adjusting the contrast, although this image has a great contrast and does not need to be edited for this.
Therefore, please observe these rules when posting images:
Guidelines for posting digital pictures
These are guidelines for editing digital images for email, webpages, or PowerPoint presentations. These instructions are for digital images of xrays, but are also generally appropriate for other images.
(1) open the file in any photomanipulation software (some type always comes with your camera, or use PhotoShop, or any other software; many are available for free online)
(2) make sure the pixels per inch are 72 (some cameras save it as something else, but most are already at 72)
(3) for xrays, change the image to greyscale (it may not look like it is in color, because it is a black and white image, but the camera saved it in color)
(4) rotate it so that it is oriented in the way your audience is used to seeing it
(5) crop it so you only show what you want to show, and always eliminate the patient identifiers
(6) resize it so that it is about 4 inches tall (this is the same as 288 pixels tall); this size is great for emails or PowerPoint or web pages. Larger images will not increase the resolution on the monitor or screen.
(7) save it as a jpg, with a medium compression level (about a 5), and kill any patient identifier in the filename.
Do not save it as a jpg until the end, otherwise you will lose resolution.
As always, remove any patient identifier.
(You might want to bookmark the page where this is posted http://www.davidlnelson.md/DigitalImageInstructions.htm)
David Nelson
Board of Directors, ISOST (the host of this List)
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