Abstract: A coma aberration correcting apparatus of an optical pickup includes an optical pickup main body having a photo diode, and an actuator mounted on an objective lens focusing a beam emitted from the photo diode onto a recording medium. The coma aberration correcting apparatus includes a main supporting unit, a holding unit, an optical system, a driving part, and a controller. The main supporting unit detachably supports the optical pickup main body. The holding unit holds and releases the actuator on the optical pickup main body supported by the main supporting unit. The optical system magnifies and photographs the beam emitted from the photo diode through the objective lens of the actuator held by the holding unit. The driving part adjusts a position of the actuator relative to the optical pickup main body. The controller controls the driving part to correct the coma aberration of the objective lens.

Abstract: A radioactive image apparatus and a method of controlling a focus thereof. The radioactive image apparatus includes a radioactive ray generating unit, a robot table, and a radioactive ray detecting unit. The focus control method includes obtaining a radioactive transmission image of a test pattern, defining a circle with a given radius in the radioactive transmission image of the test pattern, detecting values of pixels located on a circumference of the circle, calculating the standard deviation of the values of the pixels located on the circumference of the circle, and determining the radius of the circle to be an index factor of a resolution in response to the calculated standard deviation being smaller than a preset threshold value.

Abstract: An image processing system and an image processing method which correct a moiré in an image taken from a displayed image. An imaging taking apparatus takes an image of an image displayed by an image displaying apparatus and an optical characteristic changing apparatus is provided between the image taking apparatus and the image displaying apparatus. A lightpath of the displayed image is changed before the image of the displayed image is taken and an image processor receives a plurality of the taken images from the image taking apparatus and generates a processed image with a removed moiré by correcting or superposing the plurality of the images. Thus, a processed image, in which a moiré of the displayed image is removed, is promptly obtainable, and a quality of the taken image is increased. The image processing system and method are adaptable to various systems for inspection and/or measurement.

Abstract: A coma aberration correcting apparatus of an optical pickup includes an optical pickup main body having a photo diode, and an actuator mounted on an objective lens focusing a beam emitted from the photo diode onto a recording medium. The coma aberration correcting apparatus includes a main supporting unit, a holding unit, an optical system, a driving part, and a controller. The main supporting unit detachably supports the optical pickup main body. The holding unit holds and releases the actuator on the optical pickup main body supported by the main supporting unit. The optical system magnifies and photographs the beam emitted from the photo diode through the objective lens of the actuator held by the holding unit. The driving part adjusts a position of the actuator relative to the optical pickup main body. The controller controls the driving part to correct the coma aberration of the objective lens.

Abstract: A radioactive image apparatus and a method of controlling a focus thereof. The radioactive image apparatus includes a radioactive ray generating unit, a robot table, and a radioactive ray detecting unit. The focus control method includes obtaining a radioactive transmission image of a test pattern, defining a circle with a given radius in the radioactive transmission image of the test pattern, detecting values of pixels located on a circumference of the circle, calculating the standard deviation of the values of the pixels located on the circumference of the circle, and determining the radius of the circle to be an index factor of a resolution in response to the calculated standard deviation being smaller than a preset threshold value.

Abstract: A method of reconstructing a tomogram of an X-ray apparatus. The tomogram reconstructing method includes obtaining model information and a transmission image of a subject. A tomogram is reconstructed from the transmission image using the model information. The reconstructed tomogram obtained is then displayed.

Abstract: A method of reconstructing a tomogram of an X-ray apparatus. The tomogram reconstructing method includes obtaining model information and a transmission image of a subject. A tomogram is reconstructed from the transmission image using the model information. The reconstructed tomogram obtained is then displayed.

Abstract: Disclosed herein is a three-dimensional image constructing method using an X-ray apparatus. In the three-dimensional image constructing method, a construction space of a subject and information for the construction space are set. Thereafter, a plurality of transmission images of the subject are obtained. The data of the construction space are calculated on the basis of the information for the construction space set at the setting step and the transmission images obtained at the image obtaining step. The construction space is constructed on the basis of the data calculated at the image processing step.