Method for improving the perceived resolution of a colour matrix display
This invention relates to a method for improving the perceived resolution of a colour matrix display with at least one pixel, comprising the steps of subdividing an incident colour channel signal (R) to said pixel into a first and second signal component (R 1 , R 2 ), applying a gain factor (CR) to one of said signal components (R 1 , R 2 ), and-subsequently recombining said first and second signal components (R 1 , R 2 ) into an exiting, modified colour channel signal (R′).
1 . A method for improving the perceived resolution of a colour matrix display with at least one pixel, comprising the steps of subdividing an incident colour channel signal (R) to said pixel into a first and second signal component,
applying a gain factor to one of said signal components, and
subsequently recombining said first and second signal components into an exiting, modified colour channel signal.
2 . A method according to claim 1 , wherein said first and second signal components are a low-pass component and a high-pass component, respectively.
3 . A method according to claim 2 , wherein said gain factor is applied to said high-pass component.
4 . A method according to claim 2 , wherein said low-pass component is realised by means of a low-pass filter, and said high-pass component is realised by means of a high-pass filter, said low-pass and high-pass filters being complementary.
5 . A method according to claim 1 , further comprising the step of:
providing the gain factor, so that the gain factor is inversely proportional to the contribution of the colour channel to the total luminance of the colour matrix display.
6 . A method according to claim 1 , further comprising the step of:
transmitting said exiting, modified colour channel signal to a delay and up- or downsampling block in order to provide the modified colour channel signal with a suitable delay and scaling.
7 . A colour matrix display device having at least one pixel, said pixel being arranged to be controlled by means of an applied colour channel signal, the display device having a control unit comprising:
a subdivision unit, for subdividing an incident colour signal into a first and second signal component,
an gain factor application unit, for applying a gain factor to one of said components, and
a recombination unit, for subsequently recombining said first and second signal components into an exiting, modified colour channel signal, being used to control said pixel.
8 . A colour matrix display device as in claim 7 , being arranged to perform the method according to claim 1.