Visual calibration target set method

An apparatus for calibrating a display associated with stored LookUp Tables, including:

• first means for displaying on said display a first blended-region-and-solid midtone sub-target;
• second means for displaying on said display a second blended-region-and-solid light sub-target;
• third means for displaying on said display a third blended-region-and-solid dark sub target, said third dark sub-target having a third dark solid surrounded by a uniform repeating pattern of between one and three white pixels per first group of twelve pixels, the remainder of said first group of twelve pixels being substantially black pixels;
• fourth means for displaying on said display a fourth blended-region-and-solid very dark sub-target, said fourth very dark sub-target having a fourth very dark solid surrounded by a uniform repeating pattern of between one and three midtone gray pixels per second group of twelve pixels, the remainder of said second group of twelve pixels being substantially black pixels;
• and
• means for modifying said LookUp Tables responsive to changes in said first, second, third and fourth sub-targets.

An apparatus for calibrating a display including:

• means for displaying on said display a first brightness tone solid having a first dark tone;
• means for displaying on said display a second brightness tone solid having a second dark tone;
• means for displaying on said display a third brightness tone solid having a third dark tone;
• and
• means for calibrating the brightness of said display by adjusting the relative lightnesses of said brightness tone solids until a first visible degree of lightness difference between a first two of said brightness tone solids substantially equals a second visible degree of lightness difference between a second two of said brightness tone solids.

A system for calibrating a display, including:

• a gray balance target produced by said display having at least three blended-region-and-solid gray balance sub-targets and a gray scale;
• a brightness target produced by said display having at least a first brightness tone solid having a first dark tone, a second brightness tone solid having a second dark tone, and a third brightness tone solid having a third dark tone;
• a gamma target produced by said display having eight lined blended-region-and-solid gamma sub-targets;
• at least one target adjustment tool produced by said display;
• and
• a video card having LookUp Tables responsive to changes in said gray balance target, said brightness target and said gamma target.

A method for calibrating a display including the steps of:

• providing LookUp Tables associated with said monitor;
• providing a first midtone sub-target having a first midtone solid adjacent to a first midtone blended region, said first midtone blended region having a first series of adjacent double rows of substantially black pixels alternating with a first series of single rows of light pixels;
• providing a second dark sub-target having a second dark solid adjacent to a second dark blended region, said second dark blended region having a second series of adjacent double rows of substantially black pixels alternating with a second series of single rows of midtone pixels;
• providing a third light sub-target having a third light solid adjacent to a third light blended region, said third light blended region having a third series of single rows of substantially black pixels alternating with a third series of single rows of midtone pixels and alternating with a third series of single rows of light pixels;
• adjusting the visual appearance of said first midtone sub-target until said first midtone solid appears to blend with said first midtone blended region;
• adjusting the visual appearance of said second dark sub-target until said second dark solid appears to blend with second dark blended region;
• adjusting the visual appearance of said third light sub-target until said third light solid appears to blend with said third light blended region;
• and
• saving modifications to said LookUp tables which have occurred as a result of any of the preceding steps.

The method of 19 further including the steps of:

• providing at least one first lined blended-region-and-solid gamma sub target responsive to adjustments in the full tone scale on said display;
• providing at least one second lined blended-region-and-solid gamma sub-target responsive to adjustments in the dark half of the tone scale on said display;
• providing at least one third lined blended-region-and-solid gamma sub-target responsive to adjustments in the light half of the tone scale on said display;
• adjusting said at least one first lined blended-region-and-solid gamma sub-target until it appears fully blended visually;
• adjusting said at least one second lined blended-region-and-solid gamma sub-target until it appears fully blended visually;
• and
• adjusting said at least one third lined blended-region-and-solid gamma sub-target until it appears filly blended visually.

An apparatus for calibrating a display associated with stored LookUp Tables, including:

• first means for displaying on said display a first midtone sub-target having a first midtone solid adjacent to a first midtone blended region, said first midtone blended region having a first mixture of substantially black pixels and light pixels;
• second means for displaying on said display a second blended-region-and-solid dark sub-target;
• third means for displaying on said display a third blended-region-and-solid light sub-target;
• overall tone means for adjusting said first midtone LookUp Tables responsive to changes in said first midtone sub-target;
• dark tone means for adjusting said second dark sub-target and for modifying said LookUp Tables responsive to changes in said second dark sub-target;
• and
• light tone means for adjusting said third light sub-target and for modifying said LookUp Tables responsive to changes in said third light sub-target.