Display driving device and operation method thereof for improving display quality of 3D images
The disclosure provides a display driving device and an operation method thereof. The display driving device includes a timing controller circuit and a driving circuit. The timing controller circuit performs oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame. The oblique filter comprises an oblique high-pass filter or a smoothing filter. Original pixel data of a current pixel in the original image frame is replaced with new pixel data when the oblique filter mask matrix is configured for the current pixel. The driving circuit drives a display panel module according to the processed image frame. The display panel module includes a tilt lenticular lens layer having a first tilt angle. A second tilt angle of the oblique filter mask matrix of the oblique filter processing corresponds to the first tilt angle.
1. A display driving device, comprising:
a timing controller circuit, configured to perform oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame, wherein the oblique filter comprises an oblique high-pass filter or a smoothing filter, and original pixel data of a current pixel in the original image frame is replaced with new pixel data when the oblique filter mask matrix is configured for the current pixel; and
a driving circuit, coupled to the timing controller circuit to receive the processed image frame, configured to drive a display panel module according to the processed image frame,
wherein the display panel module comprises a tilt lenticular lens layer having a first tilt angle, and a second tilt angle of the oblique filter mask matrix of the oblique filter processing corresponds to the first tilt angle, wherein coordinates of a pixel in the original image frame corresponding to an element in the oblique filter mask matrix are [cos(θ 2 )*x 1 −sin(θ 2 )*y 1 , sin(θ 2 )*x 1 +cos(θ 2 )*y 1 ], wherein θ 2 is the second tilt angle, x 1 is x 0 +s, y 1 is y 0 +t, x 0 is an x component of coordinates of the current pixel in the original image frame, y 0 is a y component of the coordinates of the current pixel, s is an integer in a range of −a to a, t is an integer in a range of −b to b, a is a radius of the oblique filter mask matrix in an X-axis direction, and s is a radius of the oblique filter mask matrix in a Y-axis direction.
2. The display driving device according to claim 1 , wherein the second tilt angle is the same as the first tilt angle.
3. The display driving device according to claim 1 , wherein the first tilt angle is a tilt angle of the tilt lenticular lens layer in an axis of cylinder direction.
4. The display driving device according to claim 1 , wherein the second tilt angle is greater than 0° and less than 90°, and the first tilt angle is greater than 0° and less than 90°.
5. A display driving device, comprising:
a timing controller circuit, configured to perform oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame, wherein the oblique filter comprises an oblique high-pass filter or a smoothing filter, and original pixel data of a current pixel in the original image frame is replaced with new pixel data when the oblique filter mask matrix is configured for the current pixel; and
a driving circuit, coupled to the timing controller circuit to receive the processed image frame, configured to drive a display panel module according to the processed image frame,
wherein the display panel module comprises a tilt lenticular lens layer having a first tilt angle, and a second tilt angle of the oblique filter mask matrix of the oblique filter processing corresponds to the first tilt angle, wherein coordinates of a current pixel in the original image frame are [x 0 , y 0 ], and coordinates of an adjacent pixel of the current pixel in the original image frame are [x 0 +s, y 0 +t], wherein s is an integer in a range of −a to a, t is an integer in a range of −b to b, a is a radius of the oblique filter mask matrix in an X-axis direction, b is a radius of the oblique filter mask matrix in a Y-axis direction, wherein the timing controller circuit multiplies a rotation matrix by the coordinates [x 0 +s, y 0 +t] to obtain new coordinates, and the timing controller circuit sets the new coordinates as coordinates of a pixel in the original image frame corresponding to an element in the oblique filter mask matrix.
6. The display driving device according to claim 5 , wherein the rotation matrix is
M
(
θ
2
)
=
[
cos
θ
2
-
sin
θ
2
sin
θ
2
cos
θ
2
]
.
7. The display driving device according to claim 5 , wherein the rotation matrix is
M
(
θ
2
)
=
[
cos
θ
2
sin
θ
2
-
sin
θ
2
cos
θ
2
]
.
8. The display driving device according to claim 5 , wherein by multiplying a rotation matrix by a pixel coordinate corresponding to each element of a non-oblique filter mask matrix, the timing controller circuit rotates the non-oblique filter mask matrix by the second tilt angle to obtain the oblique filter mask matrix.
9. An operation method of a display driving device, comprising:
performing oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame, wherein the oblique filter comprises an oblique high-pass filter or a smoothing filter, and original pixel data of a current pixel in the original image frame is replaced with new pixel data when the oblique filter mask matrix is configured for the current pixel; and
driving a display panel module according to the processed image frame,
wherein the display panel module comprises a tilt lenticular lens layer having a first tilt angle, and a second tilt angle of the oblique filter mask matrix of the oblique filter processing corresponds to the first tilt angle, wherein coordinates of a pixel in the original image frame corresponding to an element in the oblique filter mask matrix are [cos(θ 2 )*x 1 −sin(θ 2 )*y 1 , sin(θ 2 )*x 1 +cos(θ 2 )*y 1 ], wherein θ 2 is the second tilt angle, x 1 is x 0 +s, y 1 is y 0 +t, x 0 is an x component of coordinates of the current pixel in the original image frame, y 0 is a y component of the coordinates of the current pixel, s is an integer in a range of −a to a, t is an integer in a range of −b to b, a is a radius of the oblique filter mask matrix in an X-axis direction, and b is a radius of the oblique filter mask matrix in a Y-axis direction.
10. The operation method according to claim 9 , wherein the second tilt angle is the same as the first tilt angle.
11. The operation method according to claim 9 , wherein the first tilt angle is a tilt angle of the tilt lenticular lens layer in an axis of cylinder direction.
12. The operation method according to claim 9 , wherein the second tilt angle is greater than 0° and less than 90°, and the first tilt angle is greater than 0° and less than 90°.
13. An operation method of a display driving device, comprising:
performing oblique filter processing on an original image frame by an oblique filter with an oblique filter mask matrix to generate a processed image frame, wherein the oblique filter comprises an oblique high-pass filter or a smoothing filter, and original pixel data of a current pixel in the original image frame is replaced with new pixel data when the oblique filter mask matrix is configured for the current pixel; and
driving a display panel module according to the processed image frame,
wherein the display panel module comprises a tilt lenticular lens layer having a first tilt angle, and a second tilt angle of the oblique filter mask matrix of the oblique filter processing corresponds to the first tilt angle, wherein coordinates of a current pixel in the original image frame are [x 0 , y 0 ], and coordinates of an adjacent pixel of the current pixel in the original image frame are [x 0 +s, y 0 +t], wherein s is an integer in a range of −a to a, t is an integer in a range of −b to b, a is a radius of the oblique filter mask matrix in an X-axis direction, s is a radius of the oblique filter mask matrix in a Y-axis directions;
multiplying a rotation matrix by the coordinates [x 0 +s, y 0 +t] to obtain new coordinates; and
setting the new coordinates as coordinates of a pixel in the original image frame corresponding to an element in the oblique filter mask matrix.
14. The operation method according to claim 13 , wherein the rotation matrix is
M
(
θ
2
)
=
[
cos
θ
2
-
sin
θ
2
sin
θ
2
cos
θ
2
]
.
15. The operation method according to claim 13 , wherein the rotation matrix is
M
(
θ
2
)
=
[
cos
θ
2
sin
θ
2
-
sin
θ
2
cos
θ
2
]
.
16. The operation method according to claim 9 , further comprising:
multiplying a rotation matrix by a pixel coordinate corresponding to each element of a non-oblique filter mask matrix, so as to rotate the non-oblique filter mask matrix by the second tilt angle to obtain the oblique filter mask matrix.