12. Alignment
The use of warping adjustment leads to image quality loss! The more geometry adjustment is applied, the
more quality loss.
Moving an anchor point causes pixels in the same region to be moved gradually with this one pixel, depending on their distance to
it. The size of the region of impact depends on the anchor point: some anchor pixels have impact on the full image, while others
have impact on a small area only. The full image is divided in
33 x 33 regions
. The smallest region of impact is one of these 1089
regions.
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
0
2
1
3
4
6
5
7
8
10
9
11 12
14
13
15 16
18
17
19 20
22
21
23 24
26
25
27 28
30
29
31 32
Image 12-32
33 x 33 regions in an image
Warp adjustment is divided in
six modes
:
•
2 x 2 (highest mode);
•
3 x 3;
•
5 x 5;
•
9 x 9;
•
17 x 17;
•
33 x 33 (lowest mode).
The six modes represent
21 levels
, each level representing its own group of
anchor points
.
Level 2 Level 3
Level 7 Level 8 Level 9
Level 4 Level 5 Level 6
Level 10
Level 11 Level 12 Level 13
Level 16
Level 14 Level 15
Level 17 Level 18
Level 19 Level 20
Level 21
Level 1
2 x 2
3 x 3
5 x 5
9 x 9
17 x 17
33 x 33
Image 12-33
Level hierarchy
The
hierarchy
of these levels is very important: each level interacts with all lower levels. Adjusting a point on a certain level affects
the points in all or some of the lower levels. The impact depends on the level itself. Therefore it is important to adjust the geometry
starting from level one and going down to lower levels as required. In practice it will not be needed to adjust the anchor points of
levels 7 and lower.
In 2 x 2 mode, we only have one level, including all four (2 x 2) anchor points, being the image corners. This mode is especially
used to correct horizontal and vertical keystone.
R5905032 HDX SERIES 20/11/2014
175
Summary of Contents for HDX series
Page 10: ...Table of contents 6 R5905032 HDX SERIES 20 11 2014...
Page 16: ...1 Safety 12 R5905032 HDX SERIES 20 11 2014...
Page 26: ...2 General 22 R5905032 HDX SERIES 20 11 2014...
Page 50: ...3 Physical installation 46 R5905032 HDX SERIES 20 11 2014...
Page 58: ...4 Input Communication 54 R5905032 HDX SERIES 20 11 2014...
Page 108: ...8 Input 104 R5905032 HDX SERIES 20 11 2014...
Page 138: ...9 Image 134 R5905032 HDX SERIES 20 11 2014...
Page 156: ...10 Layout 152 R5905032 HDX SERIES 20 11 2014...
Page 168: ...11 Lamp 164 R5905032 HDX SERIES 20 11 2014...
Page 294: ...14 Service 290 R5905032 HDX SERIES 20 11 2014...
Page 296: ...15 Maintenance 292 R5905032 HDX SERIES 20 11 2014...
Page 308: ...16 Servicing 304 R5905032 HDX SERIES 20 11 2014...
Page 310: ...A Dimensions 306 R5905032 HDX SERIES 20 11 2014...
Page 316: ...B Specifications 312 R5905032 HDX SERIES 20 11 2014...
Page 320: ...C Standard source files 316 R5905032 HDX SERIES 20 11 2014...
Page 324: ...D DMX chart 320 R5905032 HDX SERIES 20 11 2014...
Page 334: ...F Environmental information 330 R5905032 HDX SERIES 20 11 2014...