Apparatus and control method for stereoscopic display using viewer's position information
A method is provided for controlling stereoscopic display. The method includes a collection device obtaining a position variation between a space position of a viewer at the current time and a space position of the viewer at the previous time, wherein the position variation is an offset of parallel translation of the space position of the viewer relative to a display panel. The method also includes an adjusting device adjusting a stereoscopic display apparatus based on the space position of the viewer at the current time and the position variation.
1. A method for controlling stereoscopic display, comprising:
obtaining, by a collection device, a position variation between a space position of a viewer at current time and a space position of the viewer at previous time, wherein the position variation is an offset of parallel translation of the space position of the viewer relative to a display panel; and
adjusting, by an adjusting device, a stereoscopic display apparatus based on the space position of the viewer at the current time and the position variation,
wherein adjusting the stereoscopic display apparatus based on the space position of the viewer at the current time and the position variation further includes:
calculating a total number of compensated electrodes in a slit grating period based on the position variation:
calculating a total number of electrodes to be shifted based on the space position of the viewer at the current time and the number of compensated electrodes, wherein the total number of electrodes to be shifted is larger than the total number of compensated electrodes in the slit grating period: and
adjusting electrode voltage to move the slit grating by the total number of electrodes to be shifted;
wherein:
calculating the number of compensated electrodes k in a slit grating period by:
k
=
s
w
*
Δ
*
h
wherein Δ represents a position variation; s represents a total number of electrodes within a slit grating period; w represents the width of a viewing zone; and h represents a preset scale factor,
calculating the number of electrodes to be shifted N by:
N
=
x
*
f
(
f
+
z
)
*
u
+
k
wherein x represents a space position of a viewer at the current time; z represents a distance between the position of the viewer at the current time and the slit grating; f represents a distance between the slit grating and a pixel plane of the display panel; u represents the width of an electrode of the slit grating; and k represents a total number of compensated electrodes in a slit grating period.
2. The method according to claim 1 , wherein:
the collection device is at least one of an image acquiring device and a direction sensor.
3. The method according to claim 1 , wherein:
the value of h is set in a range of 0.1 to 1.44.
4. A stereoscopic display apparatus, comprising:
a display panel configured to display images;
a collection device including at least one of an image acquiring device and a direction sensor: and
one or more processors, memory, and one or more program units stored in the memory and to be executed by the one or more processors, the one or more program units comprises a processing device and an adjusting device,
wherein the collection device is configured to:
obtain viewers' position information and a deflection angle of the display panel; and
provide the obtained position information and the obtained deflection angle to the processing device;
the processing device is configured to obtain a position variation between a space position of a viewer at current time and the space position of the viewer at previous time by using the collection device, wherein the position variation is an offset of parallel translation of the viewer's space position relative to the display panel; and
the adjusting device is configured to, based on the viewer's space position at the current time and the position variation, adjust the stereoscopic display apparatus,
wherein the adjusting device further includes:
a first calculation module configured to calculate a total number of compensated electrodes in a slit grating period based on the position variation;
a second calculation module configured to calculate a total number of electrodes to be shifted based on the space position of the viewer at the current time and the number of compensated electrodes; and
an electrode voltage regulator module configured to regulate electrode voltage to move the slit grating by the number of electrodes to be shifted;
wherein:
the first calculation module calculates a total number of compensated electrodes k in a slit grating period by:
k
=
s
w
*
Δ
*
h
wherein Δ represents a position variation; s represents a total number of electrodes within a slit grating period; w represents the width of a viewing zone: and h represents a preset scale factor,
The second calculation module calculates the number of electrodes to be shifted N by:
N
=
x
*
f
(
f
+
z
)
*
u
+
k
wherein x represents a space position of a viewer at the current time; z represents a distance between the position of the viewer at the current time and the slit grating; f represents a distance between the slit grating and a pixel plane of the display panel; u represents the width of an electrode of the slit grating; and k represents a total number of compensated electrodes in a slit grating period.
5. The apparatus according to claim 4 , wherein the collection device includes:
the image acquiring device and the direction sensor,
wherein the image acquiring device is configured to:
obtain an image sequence of a viewer; and
provide the obtained image sequence to the processing device; and
the direction sensor is configured to:
obtain a deflection angle of the display panel; and
provide the obtained deflection angle to the processing device.
6. The apparatus according to claim 4 , wherein:
the value of h is set in a range of 0.1 to 1.44.