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Candidate HUD Configurations to be studied in Year 2. NCSU. Objectives. To select candidate HUD configurations to be used in 2 nd year study. Choose among 32 configurations used in 1 st year study. The selected image should represent High/Medium/Low perceived clutter conditions. - PowerPoint PPT Presentation
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Candidate HUD Configurationsto be studied in Year 2
NCSU
Objectives
• To select candidate HUD configurations to be used in 2nd
year study.
• Choose among 32 configurations used in 1st year study.
• The selected image should represent High/Medium/Low
perceived clutter conditions.
• Three configurations per each clutter condition.
Summary of Clutter Ratings
Experimental
SVS EVS TCAS Tun. Prim. condition ratings ranking ratings ranking
A -1 -1 1 1 1 abc 10.2 24 9.89 24
B -1 -1 1 -1 -1 c 5.15 32 5.61 31C 1 -1 1 1 -1 bce 10.55 23 10.27 21
D 1 -1 -1 -1 -1 e 9.1 29 8.81 28E 1 -1 -1 1 1 abe 13.25 13 13.69 12
F 1 -1 1 -1 1 ace 12.1 19 12.27 16G -1 -1 -1 1 -1 b 9.8 26 10.23 22
H 1 1 -1 -1 1 ade 12.5 17 12.91 14I 1 1 1 -1 -1 cde 9.4 27 9.09 25
J -1 1 1 -1 1 acd 15.5 6 15.19 8K 1 1 1 1 1 abcde 16 4 16.45 5
L -1 1 1 1 -1 bcd 9.95 25 10.11 23M 1 1 -1 1 -1 bde 17.95 2 17.39 4
N -1 1 -1 1 1 abd 18 1 17.73 1O -1 1 -1 -1 -1 d 15.5 6 15.93 7
P -1 -1 -1 -1 1 a 9.4 27 8.83 27
A* -1 -1 1 1 -1 bc 8.50 30 5.21 32B* 1 -1 1 1 1 abce 14.25 11 14.95 9
C* -1 -1 -1 1 1 ab 12.88 14 10.43 19D* -1 -1 1 -1 1 ac 11.13 22 10.29 20
E* 1 -1 -1 1 -1 be 11.88 20 13.49 13F* 1 -1 -1 -1 1 ae 13.38 12 9.01 26
N* 1 -1 1 -1 -1 ce 12.88 14 7.59 30I* -1 -1 -1 -1 -1 0 6.25 31 8.63 29
G* -1 1 -1 -1 1 ad 12.63 16 16.13 6H* -1 1 1 1 1 abcd 14.38 10 14.79 10
J* -1 1 1 -1 -1 cd 11.50 21 10.51 18K* 1 1 -1 -1 -1 de 14.88 9 12.71 15
L* -1 1 -1 1 -1 bd 12.25 18 17.53 3M* 1 1 1 -1 1 acde 15.63 5 13.77 11
O* 1 1 -1 1 1 abde 17.25 3 17.59 2P* 1 1 1 1 -1 bcde 15.00 8 11.77 17
measured predicted
In-filight
Scenario
Bonus
Image Features
Predicted clutter ratings were calculated using the regression equation from the 1st year study .The correlation between measured and predicted ratings is r=0.8511 (p<0.0001).
Selection of Displays from Rankings
Common displays: N, M, O, O*, K.
Selection
Steps and Criteria
1. Define three groups representing high/medium/low clutter ratings - lower 22%, middle 25% and upper 22% (7~8 images) in each.
2. Look for common displays across measured and predicted rankings in each category.
3. Select diverse set of displays among those found in both measured and predicted lists within groups.
Common displays: C*, H, F, E*
Common displays: B, I*, A*, D, P
Group ranking measured predicted1 N N2 M O*3 O* L*4 K M5 M* K6 O G*7 J O 13 E E*14 N* H15 C* K*16 G* F17 H P*18 L* J*19 F C*20 E* D*32 B A*31 I* B30 A* N*29 D I*28 I D27 P P26 G F*
lowest(lower22%)
medium(middle
25%)
highest(upper22%)
Selection of Features in High Clutter
• Among the five common display images…– “O” was selected because represents an “EVS-only” condition.– “O*” was selected because it represents a full-featured HUD.
• “K” is same as O* except with TCAS. (TCAS will not be considered in this experiment because of limited integration by actual manufacturers.)
– “N” overlapped “O*” in features, except for SVS– “M” was included because it presents both SVS and EVS features.
Final Selection: M, O*, O.
Image N M O* K O
SVS 0 1 1 1 0
EVS 1 1 1 1 1
TUN 1 1 1 1 0
PRIM 1 0 1 1 0
Configurations of High Clutter Ratings
Image OImage M Image O*
SVS: Off
EVS: On
TCAS: Off
TUN: Off
PRIM: Off
SVS: On
EVS: On
TCAS: Off
TUN: On
PRIM: Off
SVS: On
EVS: On
TCAS: Off
TUN: On
PRIM: On
Selection of Features in Medium Clutter
• Among the four common display images…– “C* was selected because it doesn’t include SVS while others do.– “H” was selected because it presents the EVS feature.– “E*” was selected because it does not present PRIMARY mode
symbology while all others do.
Final Selection: C*, H, E*.
Image C* H F E*
SVS 0 1 1 1
EVS 0 1 0 0
TUN 1 0 0 1
PRIM 1 1 1 0
Configurations of Medium Clutter Ratings
Image H Image E*Image C*
SVS: On
EVS: On
TCAS: Off
TUN: Off
PRIM: On
SVS: On
EVS: Off
TCAS: Off
TUN: On
PRIM: Off
SVS: Off
EVS: Off
TCAS: Off
TUN: On
PRIM: On
Selection of Features in Low Clutter
• Among the five common display images…– “D” was selected to because it represents an “SVS-only” condition.– “I*” was selected because it has no SVS, EVS, TUN, or PRIM feature.
• (B is the same as I* except for TCAS. TCAS will not be considered in this experiment because of limited integration by actual manufacturers.)
– “P” was selected because it includes PRIMARY symbology.• Presentation of PRIMARY symbology had a much stronger effect on clutter
ratings in the 1st study than the presence of TUN (A*).
Final Selection: I*, D, P
Image B I* A* D P
SVS 0 0 0 1 0
EVS 0 0 0 0 0
TUN 0 0 1 0 0
PRIM 0 0 0 0 1
Configurations of Low Clutter Ratings
Image PImage I* Image D
SVS: Off
EVS: Off
TCAS: Off
TUN: Off
PRIM: On
SVS: Off
EVS: Off
TCAS: Off
TUN: Off
PRIM: Off
SVS: On
EVS: Off
TCAS: Off
TUN: Off
PRIM: Off
(Use D in order to have a condition with SVS, which is not included in B or I*.)
(Use P in order to have a condition with PRIMARY symbology.)