Apparatuses, methods, systems, and program products are disclosed for automatically calibrating display color output on lid closure. An apparatus includes a processor and a memory that stores code executable by the processor. The code is executable to detect a lid closure event for a lid that closes to obscure a display of a portable electronic device. In response to detecting the lid closure event, the processor performs a color calibration of the display, including using a color sensor to measure a color output by the display with the lid in a closed position and updating color calibration parameters for optimizing the color output. A method, system, and computer program product may perform the functions of the apparatus.

A writing utensil including a color sensor operable to generate sensor data A processing unit is configured to receive the sensor data from the color sensor and to output the sensor data. A networking device is configured to receive the sensor data from the processing unit and arranged to transmit the sensor data via a network connection.

A color calibrator used to correct the display color of a display device is provided. The color calibrator includes a color correction module, a cover and a combiner. The color correction module includes a color correction unit for correcting the display color. The cover is connected to the color correction module to selectively expose or cover the color correction unit. The combiner is disposed on the cover, and the combiner is connected to the display device when the cover exposes the color correction unit.

The disclosed computer-implemented method may include a display calibration apparatus. The display calibration apparatus may include a lens and an actively-cooled electromagnetic radiation detector configured to detect electromagnetic radiation emitted from various pixels of an electronic display panel under test. The electromagnetic radiation may travel through the lens prior to reaching the detector. The display calibration apparatus may also include a special-purpose computing device configured to: analyze the detected electromagnetic radiation from the pixels of the electronic display panel and generate calibration data for the electronic display panel using a specified calibration algorithm. As such, the the electronic display panel may operate using the generated calibration data. Various other methods, systems, and computer-readable media are also disclosed.

A display device includes a casing, a display unit, an optical sensing unit, a driving unit and a processing unit. The processing unit controls the display unit to display a predetermined pattern corresponding to a predetermined range. The predetermined pattern includes a target area. The target area is adjacent to a target position and corresponds to a driving parameter of the driving unit. When the optical sensing unit is located within the target area, the driving unit drives the optical sensing unit to move to the target position by a predetermined manner. When the optical sensing unit is located beyond the target area, the driving unit drives the optical sensing unit to move towards the target position. When the optical sensing unit moves to a boundary of the target area, the driving unit drives the optical sensing unit to move to the target position by the driving parameter.

A method for adjusting uniformity of image color tones includes setting brightness of a darkest display region as target brightness and setting color temperature coordinates of a designated display region as target color temperature coordinates of at least one part of display regions of a display, comparing the brightness and the color temperature coordinates of each display region of the at least one part of display regions with the target brightness and the target color temperature coordinates for generating a first calibrated color tone, generating a second calibrated color tone of the each display region of the at least one part of display regions according to an Alpha channel parameter and the first calibrated color tone, generating a uniformity compensated image layer according to all second calibrated color tones, and virtually overlaying the uniformity compensated image layer on the at least one part of display regions.

A color conversion information generation apparatus converts a first coordinate value into a second coordinate value in a second color space by using first conversion information, acquires a colorimetric coordinate value in a first color space indicating a colorimetric result of an image output by a first output apparatus according to the second coordinate value, converts the second coordinate value into a third coordinate value by using second conversion information, determines a target coordinate value indicating a target color in the first color space based on the third coordinate value and a difference between the first coordinate value and the colorimetric coordinate value, retrieves a fourth coordinate value satisfying a condition that a color difference between a fifth coordinate value in the first color space obtained by converting a fourth coordinate value in the second color space by using the second conversion information and the target coordinate value is smaller than a color difference between the third coordinate value and the target coordinate value, and generates color conversion information used to convert the first coordinate value or a name of a color into a coordinate value in the second color space based on the first coordinate value and the fourth coordinate value satisfying the condition.

The disclosed computer-implemented method may include a display calibration apparatus. The display calibration apparatus may include a lens and an actively-cooled electromagnetic radiation detector configured to detect electromagnetic radiation emitted from various pixels of an electronic display panel under test. The electromagnetic radiation may travel through the lens prior to reaching the detector. The display calibration apparatus may also include a special-purpose computing device configured to: analyze the detected electromagnetic radiation from the pixels of the electronic display panel and generate calibration data for the electronic display panel using a specified calibration algorithm. As such, the electronic display panel may operate using the generated calibration data. Various other methods, systems, and computer-readable media are also disclosed.

A method for characterizing a digital color camera includes, for each of three primary colors used in a field sequential color virtual image, determining a conversion model for each color using RGB values and the color-measurement values. For each primary color, the method includes illuminating a display device using an input light beam of a primary color having spectral properties representative of a light beam in a virtual image in a wearable device. The method includes capturing, with the digital color camera, an image of the display device, and determining, from the image, RGB values for each primary color. The method includes capturing, with a color-measurement device, a color-measurement value associated with each corresponding primary color at the display device, thereby acquiring a color-measurement value in an absolute color space. A conversion model for each color is determined using RGB values and the color-measurement values.

A color calibrator includes a first casing, a second casing and an optical sensor. The first casing has an accommodating recess and a plurality of first positioning members, wherein the first positioning members are arranged along an axial direction of the accommodating recess. The second casing is telescopically disposed in the accommodating recess. The second casing has a second positioning member. One of the first positioning member and the second positioning member is a magnet. Another one of the first positioning member and the second positioning member is a magnet or a magnetic induction material. The second positioning member cooperates with one of the first positioning members to position the second casing at one of a plurality of telescopic positions with respect to the first casing. The optical sensor is disposed on the second casing.