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113results about How to "Accurate brightness" patented technology

Image processing system, display device, program, and information recording medium

An image processing system is disclosed. The image processing system includes an image characteristic information generating unit for calculating a maximal luminance value, an APL, and a luminance histogram of one frame based on an image signal to be displayed, a luminance expansion rate calculating unit for calculating a luminance expansion rate based on the maximal luminance level and the APL, a luminance expansion processing unit for performing a luminance expansion process on the image signal based on the luminance expansion ratio, a control light intensity calculating unit for calculating control light intensity based on the maximal luminance value and the APL or the luminance expansion rate, a control light intensity regulating unit for correcting the control light intensity based on the luminance histogram and generating corrected control light intensity, and a control light processing unit for generating a control signal for controlling a light controlling unit based on the corrected control light intensity, wherein the control light intensity regulating unit acquires the number of pixels having a luminance value equal to or greater than a first predetermined value based on the luminance histogram and generates the corrected control light intensity such that the luminance is decreased when a ratio of the number of the pixels to the total number of the pixels is equal to or greater than a second predetermined value.
Owner:SEIKO EPSON CORP

Observation system and method of controlling observation system

An observation system includes: a container holding unit; a ring illumination, including a light source in a ring shape, arranged in a position opposed to an outer bottom surface of a container so that a central axis of the illumination is aligned to that of a bottom surface of the container held by the container holding unit, when an observation target is observed; a first light-shielding plate in a ring shape, having an inner diameter capable of varying, arranged between the illumination and the container holding unit, and configured to shield light from the illumination; a lens, arranged in a position opposed to an inner bottom surface of the container held by the container holding unit, to observe the observation target; and a second light-shielding plate, having an outer diameter capable of varying, arranged in an internal space of the illumination, and configured to shield light from the illumination.
Owner:PHC HLDG CORP

Brightness correction method, system and equipment and computer readable storage medium

The invention discloses a brightness correction method, system and equipment and a computer readable storage medium. The method comprises the steps of obtaining a detection shooting image obtained after a preset shooting equipment shoots an original detection image; determining shooting brightness attenuation information of a preset shooting equipment based on the detected brightness of the shot image; obtaining a projection shooting picture obtained after the preset shooting equipment shoots the original projection picture, wherein the original projection picture is a picture obtained after the target projection equipment projects the original detection picture; performing brightness compensation on the projection shooting image based on the shooting brightness attenuation information toobtain a projection compensation image; and determining brightness correction information of the target projection equipment based on the brightness of the projection compensation image and the original detection image, and performing brightness correction on the target projection equipment based on the brightness correction information. According to the invention, the target of performing brightness correction on the target projection equipment by means of the shot picture is realized, and the brightness correction efficiency is high. The brightness correction system and equipment and the computer readable storage medium provided by the invention also solve the corresponding technical problems.
Owner:CHENGDU XGIMI TECH CO LTD
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