Transparent display system and operation method thereof
A transparent display system including a display panel, a data acquisition module and a computation module is provided. The data acquisition is adapted to capture a field luminance of a field where the display panel is located and a display information luminance of display information of the display panel. The computation module determines whether a luminance contrast of the display information falls within a range from a lower boundary to an upper boundary, wherein the luminance contrast of the display information equals to the field luminance plus the display information luminance and then divided by the field luminance. If it is determined that the luminance contrast of the display information does not fall within the range from the lower boundary to the upper boundary, a luminance contrast optimization procedure is performed. An operation method of the transparent display system is also provided.
1. A transparent display system, comprising:
a display panel, from which a background located behind the display panel is seen;
a data acquisition module, adapted to capture a field luminance of a field where the display panel is located and a display information luminance of display information of the display panel, wherein the field luminance comprises a foreground reflective light luminance and a background transmissive light luminance; and
a computation module, coupled to the display panel and the data acquisition module, the computation module determining whether a luminance contrast of the display information falls within a range from a lower boundary to an upper boundary based on the captured field luminance and the display information luminance, wherein the luminance contrast of the display information equals to the field luminance plus the display information luminance and then divided by the field luminance, if the luminance contrast of the display information is determined not falling within the range from the lower boundary to the upper boundary, a luminance contrast optimization procedure is performed; and if the luminance contrast of the display information is determined falling within the range from the lower boundary to the upper boundary, the display information being output.
2. The transparent display system according to claim 1 , wherein the lower boundary is defined by Formula 1 and Formula 2, and the upper boundary is defined by Formula 1, Formula 3, and Formula 4,
θ
=
tan
-
1
(
w
d
)
Formula
1
1.773
×
e
-
(
θ
-
13.
.95
22.95
)
2
+
1.234
×
e
-
(
θ
+
0.2208
0.4677
)
2
Formula
2
f
(
d
)
×
k
LB
0.5
×
tan
θ
Formula
3
f
(
d
)
=
-
0.1734
×
d
3
+
0.6648
×
d
2
+
0.6372
×
d
+
0.9788
Formula
4
wherein θ is a viewing angle, w is a width of the display information, d is a distance between a user and the display information, k falls within a range from 8.4 to 30.8, and LB is the background transmissive light luminance.
3. The transparent display system according to claim 2 , wherein the computation module further determines whether a display information size of the display information falls within a range from 0.15 degrees to 2.25 degrees of the viewing angle, if the display information size is determined not falling within the range from 0.15 degrees to 2.25 degrees of the viewing angle, the display information size is optimized.
4. The transparent display system according to claim 1 , wherein performing the luminance contrast optimization procedure comprises at least one of optimizing the display information luminance, optimizing a display information size, changing a location of the display information displayed on the display panel and optimizing the field luminance.
5. The transparent display system according to claim 1 , wherein the data acquisition module is further adapted to capture user information, and the computation module further adjusts a threshold value range of the luminance contrast of the display information based on the user information.
6. An operation method of a transparent display system, comprising:
capturing, using a data acquisition module, a field luminance of a field where a transparent display is located and a display information luminance of display information, wherein the field luminance comprises a foreground reflective light luminance and a background transmissive light luminance;
determining, using a computational module, whether a luminance contrast of the display information falls within a range from a lower boundary to an upper boundary based on the captured field luminance and the display information luminance, wherein the luminance contrast of the display information equals to the field luminance plus the display information luminance and then divided by the field luminance;
if the luminance contrast of the display information is determined falling within the range from the lower boundary to the upper boundary, the display information being output; and
if the luminance contrast of the display information is determined not falling within the range from the lower boundary to the upper boundary, a luminance contrast optimization procedure being performed.
7. The operation method of the transparent display system according to claim 6 , wherein the lower boundary is defined by Formula 1 and Formula 2, and the upper boundary is defined by Formula 1, Formula 3, and Formula 4,
θ
=
tan
-
1
(
w
d
)
Formula
1
1.773
×
e
-
(
θ
-
13.
.95
22.95
)
2
+
1.234
×
e
-
(
θ
+
0.2208
0.4677
)
2
Formula
2
f
(
d
)
×
k
LB
0.5
×
tan
θ
Formula
3
f
(
d
)
=
-
0.1734
×
d
3
+
0.6648
×
d
2
+
0.6372
×
d
+
0.9788
Formula
4
wherein θ is a viewing angle, w is a width of the display information, d is a distance between a user and the display information, k falls within a range from 8.4 to 30.8, and LB is the background transmissive light luminance.
8. The operation method of the transparent display system according to claim 7 , further comprising:
determining whether a display information size of the display information falls within a range from 0.15 degrees to 2.25 degrees of the viewing angle; and
if the display information size is determined not falling within the range from 0.15 degrees to 2.25 degrees of the viewing angle, the display information size being optimized.
9. The operation method of the transparent display system according to claim 8 , wherein if the luminance contrast of the display information is lower than the lower boundary and the display information size falls within the range from 0.15 degrees to 0.6 degrees of the viewing angle, then the luminance contrast optimization procedure comprises increasing the display information size.
10. The operation method of the transparent display system according to claim 8 , wherein if the background transmissive light luminance is twice greater than the display information luminance, optimizing the field luminance comprises shielding a whole region or a partial region of a background image.
11. The operation method of the transparent display system according to claim 8 , wherein if a luminance of a background image is greater than 600, optimizing the field luminance comprises shielding a high luminance region in the background image.
12. The operation method of the transparent display system according to claim 8 , wherein if the field luminance is lower than a default value, optimizing the field luminance comprises enhancing a luminance of a whole region of a display panel.
13. The operation method of the transparent display system according to claim 8 , wherein if the display information traverses a boundary between a high luminance region and a low luminance region of a background image, optimizing the field luminance comprises enhancing a luminance of the low luminance region in the background image.
14. The operation method of the transparent display system according to claim 6 , wherein performing the luminance contrast optimization procedure comprises at least one of optimizing the display information luminance, optimizing a display information size, changing a location of the display information and optimizing the field luminance.
15. The operation method of the transparent display system according to claim 6 , further comprising:
capturing user information; and
adjusting a threshold value range of the luminance contrast of the display information based on the user information.