A display device includes: a display panel including pixels for displaying a first color, a second color, a third color, and a fourth color; and a signal processor configured to convert an image signal including gradation data of the first to third colors into a first signal including gradation data of the first to third colors and a second signal including a gradation datum of the fourth color and output the first and second signals. When the gradation data of the image signal have the same value, output signals from the signal processor include an output signal in which the gradation data of the first signal and the gradation datum of the second signal have the same value and an output signal in which the gradation data of the first signal and the gradation datum of the second signal have values different from each other by 1.

The present invention has an object of providing a display that makes uniform brightnesses of a display image in a plane of a display panel according to a position of an observer. The display includes a display panel, a surface light source panel that emits light toward a back surface of the display panel, a sensor that senses a position of an observer with respect to the display panel, and a controller, wherein a brightness can be adjusted for each of areas of the surface light source panel, and the controller adjusts respective brightnesses of the areas of the surface light source panel so that brightnesses of a display image in a plane of the display panel are made uniform, when the display panel is observed from the position of the observer sensed by the sensor.

The present invention has an object of providing a display that makes uniform brightnesses of a display image in a plane of a display panel according to a position of an observer. The display includes a display panel, a surface light source panel that emits light toward a back surface of the display panel, a sensor that senses a position of an observer with respect to the display panel, and a controller, wherein a brightness can be adjusted for each of areas of the surface light source panel, and the controller adjusts respective brightnesses of the areas of the surface light source panel so that brightnesses of a display image in a plane of the display panel are made uniform, when the display panel is observed from the position of the observer sensed by the sensor.

A device and method for color correction of two camera systems each having an imaging device and an illumination source. The camera systems are separately white balanced with the imaging device outside a scene. Their white balance gains and color correction matrices are saved. Based on the measurements, combined white balance gains and combined color correction matrices are computed and saved. Thereafter, with the imaging devices in a scene, performing white balancing by measuring the R, G, and B values of both imaging devices together, and then white balancing by measuring the R, G, and B values of each separate imaging device with the other camera system's light off. Comparisons are made of each camera's scene measurements against the combined scene measurements. If they are significantly different, the combined light set of white balance gain and color correction matrix is applied to digital signal processing paths of each camera system.

A device and method for color correction of two camera systems each having an imaging device and an illumination source. The camera systems are separately white balanced with the imaging device outside a scene. Their white balance gains and color correction matrices are saved. Based on the measurements, combined white balance gains and combined color correction matrices are computed and saved. Thereafter, with the imaging devices in a scene, performing white balancing by measuring the R, G, and B values of both imaging devices together, and then white balancing by measuring the R, G, and B values of each separate imaging device with the other camera system's light off. Comparisons are made of each camera's scene measurements against the combined scene measurements. If they are significantly different, the combined light set of white balance gain and color correction matrix is applied to digital signal processing paths of each camera system.

An image processing method and apparatus is disclosed, where the image processing method includes receiving an image including frames captured over a time period in an illumination environment including alternating current (AC) light, estimating a specular chromaticity and a diffuse chromaticity of the image based on the frames, determining a weight of each of the specular chromaticity and the diffuse chromaticity based on a frame of the frames, and correcting the image based on the specular chromaticity, the diffuse chromaticity, the weight of the specular chromaticity, and the weight of the diffuse chromaticity.

An image processing method and apparatus is disclosed, where the image processing method includes receiving an image including frames captured over a time period in an illumination environment including alternating current (AC) light, estimating a specular chromaticity and a diffuse chromaticity of the image based on the frames, determining a weight of each of the specular chromaticity and the diffuse chromaticity based on a frame of the frames, and correcting the image based on the specular chromaticity, the diffuse chromaticity, the weight of the specular chromaticity, and the weight of the diffuse chromaticity.

A sensor module including at least one brightness sensor element for detecting a brightness of a wideband electromagnetic radiation and at least one color sensor field, which includes at least one color sensor element for detecting a color of the electromagnetic radiation. The brightness sensor element has a larger sensor surface than the color sensor field.

A sensor module including at least one brightness sensor element for detecting a brightness of a wideband electromagnetic radiation and at least one color sensor field, which includes at least one color sensor element for detecting a color of the electromagnetic radiation. The brightness sensor element has a larger sensor surface than the color sensor field.

Provided is an image combination method that can represent the texture of a drawing medium such as paper without causing a foreground fading problem. The image combination method includes a step of acquiring an illumination-light component and a reflectance component from an input image, a step of generating a texture-combined image by combining the reflectance component or the corrected reflectance component and a texture image representing a desired texture, and a step of acquiring a combined image by combining the illumination-light component or the corrected illumination-light component and the texture-combined image.