Abstract: A detection image generation section generates a detection image, which is an image for detection a state of a projection image, image, and includes a plurality of detection image parts, and background images covering respective peripheries of the detection image parts. Each of the detection image parts includes a plurality of regions with respective luminance values different from each other, and the background images have luminance values lower than the luminance values of the detection image parts. The detection image generation section changes at least one of a luminance distribution of each of the detection image parts of the detection image to be generated and a size of each of the background images so that a luminance distribution of each of the detection image parts of the taken detection image obtained by imaging is approximated to a luminance distribution of corresponding one of the detection image parts of the detection image.

Abstract: A projector that acquires evaluation values representing how well projection light is brought into focus on a screen, outputs the acquired evaluation values and a maximum value of the acquired evaluation values, and updates the maximum value to a new value at a predetermined timing.

Abstract: A projector that acquires evaluation values representing how well projection light is brought into focus on a screen, outputs the acquired evaluation values and a maximum value of the acquired evaluation values, and updates the maximum value to a new value at a predetermined timing.

Abstract: An image processing device is capable of suppressing the influence of the direction in which the image is projected on the projection surface to thereby improve the accuracy of the focus adjustment. The image processing device includes a detection section adapted to detect information regarding a direction in which an adjusting image for adjusting focus of an image to be projected on a projection surface is projected on the projection surface, and an adjusting image acquisition section adapted to obtain the adjusting image different in accordance with the information regarding the direction detected by the detection section.

Abstract: A data conversion apparatus for converting converted data that belongs to an m-axis data space, includes: a data storage unit that stores correction data at respective lattice points of an m-dimensional lookup table; and a data conversion unit that reads the correction data at the lattice points positioned around the converted data from the first to N-th memories with reference to the m-dimensional lookup table, and converts the converted data, wherein the data storage unit assumes a virtual m-dimensional lookup table, which has an axis in which one virtual lattice point is included on the side of an end portion of the axis, and the data storage unit stores the data at the respective virtual lattice points and the correction data at the lattice points except for the virtual lattice points in the virtual m-dimensional lookup table in the first to N-th memories.

Abstract: A projector that acquires evaluation values representing how well projection light is brought into focus on a screen, outputs the acquired evaluation values and a maximum value of the acquired evaluation values, and updates the maximum value to a new value at a predetermined timing.

Abstract: An image processing apparatus projects and displays an image on a projection surface. The image processing apparatus includes an adjustment image producing section (an adjustment image producing section and an image analysis section) that produces an adjustment image for adjusting a focus of a projected image to be displayed on the projection surface and an imaging section that images the adjustment image projected on the projection surface. The adjustment image producing section changes the adjustment image to be produced, such that a grayscale pattern of a captured adjustment image obtained by imaging is close to a grayscale pattern of the adjustment image.

Abstract: A data conversion apparatus for converting converted data that belongs to an m-axis data space, includes: a data storage unit that stores correction data at respective lattice points of an m-dimensional lookup table; and a data conversion unit that reads the correction data at the lattice points positioned around the converted data from the first to N-th memories with reference to the m-dimensional lookup table, and converts the converted data, wherein the data storage unit assumes a virtual m-dimensional lookup table, which has an axis in which one virtual lattice point is included on the side of an end portion of the axis, and the data storage unit stores the data at the respective virtual lattice points and the correction data at the lattice points except for the virtual lattice points in the virtual m-dimensional lookup table in the first to N-th memories.