Methods for driving electro-optic displays
There are provided methods for driving an electro-optic display having a plurality of display pixels, a such method includes receiving an image, converting the image into a YCbCr image; and processing the YCbCr image to generate a luma image. The method further includes calculating variations in a local area for the YCbCr image to obtain a variation map, and calculating an effect ratio map using the calculated variation.
1. A method for driving an electro-optic display having a plurality of display pixels, the method comprising:
receiving an image;
converting the image into a YCbCr image;
processing the YCbCr image to generate a luma image;
calculating variations in a local area for the YCbCr image to obtain a variation map; and
calculating an effect ratio map using the calculated variation.
2. The method of claim 1 , wherein the step of processing the YCbCr image to generate a luma image further comprising boosting outputs from a red channel, a green channel, and a blue channel.
3. The method of claim 2 , wherein boosting the outputs from a red channel, a green channel, and a blue channel comprises matching the luma to that of a target pixel.
4. The method of claim 1 , wherein calculating the variations comprises calculating the variations for each of the red channel, green channel, and the blue channel of the YCbCr image.
5. The method of claim 4 wherein calculating the variations comprises maximizing variations for each of the red channel, green channel, and the blue channel of the YCbCr image.
6. The method of claim 1 , wherein calculating an effect ratio map comprises taking pixel values from the luma image.
7. The method of claim 1 , wherein calculating an effect ratio map comprises taking pixel values from the received image.
8. An electro-optic display configured to carry out the method of claim 1 further comprising a color filter array.
9. The electro-optic display according to claim 8 comprising an electrophoretic material comprising a plurality of electrically charged particles disposed in a fluid and capable of moving through the fluid under the influence of an electric field.
10. The electro-optic display according to claim 8 wherein the electrically charged particles and the fluid are confined within a plurality of capsules or microcells.
11. The electro-optic display according to claim 8 wherein the electrically charged particles and the fluid are present as a plurality of discrete droplets surrounded by a continuous phase comprising a polymeric material.
12. A display controller capable of controlling the operation of a bistable electro-optic display, the controller configured to carry out a driving method for operating the display, the method comprises:
receiving an image;
converting the image into a YCbCr image;
processing the YCbCr image to generate a luma image;
calculating variations in a local area for the YCbCr image to obtain a variation map; and
calculating an effect ratio map using the calculated variation.
13. The controller according to claim 12 , wherein the driving method further comprising calculating an effect ratio map comprises taking pixel values from the luma image.