Aura HD Lines ghosting out

[MacEachaidh]

On my Aura HD, lines such as horizontal rules or line art in maps and the like, will show strongly as the page loads and then immediately flash to hairlines and a very pale grey.

I'm assuming this is because of pixel size on the HD screen?

Is there any way I can resolve this, without making the line on the Aura HD show up like a rectangle on my Touch? And is there anything I can do about graphics like maps or diagrams?

[GeoffR]

Where I have seen this problem on my Glo it has been because the original image is coded as shades of grey instead of black-and-white. The device seems to display the image in two steps, first as black and white, then it adds the colours or shades of grey. I think that is what gives the effect of the image briefly appearing dark and then becoming lighter.

The only solution I know of is to edit the image in the original book to turn it into a black-and-white image. On Linux I use the Colors > Threshold function in gimp to reduce the image from grey scale to two colours.

Edit: Attached are screenshots from my Glo displaying this image, first as the original grey scale image, the second as a black-and-white image.