Well it’s happened again and inspired me to write a short blog. Digital photographs (including scanned, downloaded, stolen from Google images and digital cameras) are known as bitmaps. ANY TIME a photograph or video (different to some line drawings, see later) reaches the computer screen, it is converted to a bitmap (if it wasn’t one already). A bitmap is a grid with a finite number of pixels (digital cameras are measured in Megapixels (10M, 5M etc.), computer screens are also, 1024×768 etc), each pixel is assigned a colour. When these tiny pixels are zoomed out, shrunk down to individual points, the squares appear invisible and we see a complete photograph of a tree/landscape/dog/your mum.

When we zoom into the bitmap, these squares will become larger and detail in the photograph is lost. There is no way to magically split a pixel out into it’s composite parts, it is a single colour and nothing more, the information isn’t there to enhance! A low quality image or video will ALWAYS BE a low quality image or video.

I can’t blame you for thinking it is possible. I mean Hollywood shows this happening all the time, but it is physically impossible with today’s technology. Even future technology will not be able to improve photographs and videos created with the old technology. It’s IMPOSSIBLE.

Scan back to the start of the film… enhance the image. See the guy in the blue coat on the floor in the reflection of the computer screen. Enhance it, turn him round and lift him up so we can work out how tall he is. Look, can you see what he ate for Breakfast? Check his stomach contents, looks like it came from McDonalds on Regent Street at 11:02-11:04am this morning, lets go speak to Magda who served him to get an ID.

It’s just NOT possible!

The exception comes with some digital line drawings (with or without colour) but not all. The rule of thumb is, unless a graphic designer has issued you with a vector format file (Illustrator, Fireworks, Some PDFs etc.) then it’s probably not high enough quality to enlarge or print in high quality. Most images from your old website will be shrunk to just the right size for the screen, generally these can not be enlarged, printed for publication or improved upon, including logos. These would need to be retaken, redrawn or the original obtained.

Tomorrow’s blog: Time Travel – why a new website and graphics cannot be designed, built and tested before last week.