TomTom POI image - red becomes transparent?

exotic · Occasional Visitor Joined: Nov 19, 2007 Posts: 5

I created a POI bitmap (22x22) for my TomTom ONE v2, and all seemed fine. The POI image shows up nicely when browsing the POI list.

However, when I drive within range of the POI, as expected it beeps and shows up larger in the top left corner of the TomTom screen, but some of the red in the logo gets turned white or transparent.

I've tried saving under numerous bitmap format versions with MS Paint, Photoshop, etc, but nothing seems to make any difference.

url now edited out

Any ideas?

GerryC · Posted: Tue Dec 18, 2007 2:58 am Post subject:

Yep, that's what happens. If you use an off-red colour (eg 255 red, 51 green, 51 blue) it still looks red to the eye. This is the colour used in the speed limit icons from this site.
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exotic · Occasional Visitor Joined: Nov 19, 2007 Posts: 5

Thanks Gerry!

As the bitmap had blended edges, I found the easiest way was to alter the brightness of the whole image using Photoshop.

It took several attempts and a few hours.

R=255, but I found B and G had to be at least 26 before red became visible.

Silver_Surfer · Occasional Visitor Joined: Mar 10, 2008 Posts: 8

PaulB2005 · Posted: Sat Apr 12, 2008 11:56 am Post subject:

For anyone using a Garmin, Magenta (255,0,255 -RGB) is the transparent colour....

Scarecrow · Posted: Sun Apr 13, 2008 12:25 pm Post subject:

PaulB2005 · Posted: Sun Apr 13, 2008 2:09 pm Post subject:

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