Ranging/measurement display isn't correct

[avsa242]

While ranging data is displayed and clearly reacts proportionally to object distance, the image data array that gets composited from the four subpages isn't structured quite right. The alignment of the data isn't correct, and there's possibly an error in how the four datasets are merged.

[avsa242]

This is more coherent looking now, but is still not correct. There are several zones starting halfway up in the composited image going to the top that usually show a range of zero, too, unless an object is much closer. This is much easier to see in the newly added serial demo (requires 24bpp-capable ANSI terminal; for ex., KDE Konsole)