Methods for improved camera view in studio applications

A method for a camera comprising a shutter having a shutter opening time, for automatically determining start and length of said shutter opening time, in an arrangement, comprising a display and said camera recording images from said display, the method comprising:

• (i) displaying an image with defined ON time;
• (ii) changing position of said ON time by means of using a programmable timing;
• (iii) analyzing the recording of said image on said camera for said changing position in (ii);
• and
• (iv) using said analyzing for determining when said shutter opening time of said camera starts and when it ends.

A method for automatic color adjustment to a desired level of a camera in an arrangement comprising a light source display and said camera recording images from said light source display, said method comprising the steps of:

• (i) showing an R/G/B test pattern on said light source display;
• (ii) adjusting the R/G/B intensities of said camera with the individual and respective R/G/B from the R/G/B test pattern on said light source display;
• (iii) measuring the R/G/B intensities of said camera of subsequent recorded R/G/B test patterns shown on said light source display;
• and
• repeating (ii) until the R/G/B intensities are at said desired level.

A method for color calibration over time, performed by a processing system of a display, based on light-emitting elements (LEEs), in an arrangement comprising said display and a camera recording images from said display, said camera comprising a shutter having a shutter opening time, said method comprising:

• performing a color measurement of a plurality of LEEs of said display;
• determining color space values for the color measurement of said plurality of LEEs;
• defining for said plurality of LEEs a first set of target colors in color space values;
• defining for said plurality of LEEs a second set of target colors in color space values;
• calculating a first calibration matrix based on the measured colors and on the first set of target colors, for during said shutter opening time;
• calculating a second calibration matrix based on the measured colors and on the second set of target colors, for out of said shutter opening time;
• defining a matrix factor, being selectively chosen in relation to said shutter opening time, as a number;
• calculating a final calibration matrix, defined by said first and second calibration matrix, each being weighed based on said matrix factor.

A method for color calibration over time, performed by a processing system of a display, based on light-emitting elements (LEEs), in an arrangement comprising said display and a multiple camera system having multiple cameras recording images from said display, said multiple cameras comprising each a shutter with a shutter opening time, said method comprising:

• performing a color measurement of a plurality of LEEs of said display;
• determining color space values for the color measurement of said plurality of LEEs;
• defining for said plurality of LEEs a first set of target colors in color space values;
• defining for said plurality of LEEs at least a second set of target colors in color space values;
• calculating a first calibration matrix based on the measured colors and on the first set of target colors, for during the shutter opening time of one of said multiple cameras;
• calculating at least a second calibration matrix based on the measured colors and on at least second set of target colors, for during the shutter opening time of another of said multiple cameras;
• defining a matrix factor, being selectively chosen in relation to the shutter opening time of each of said multiple cameras, as a number;
• calculating a final calibration matrix, defined by said first and at least second calibration matrix, each being weighed based on said matrix factor.