96results about How to "Remove image distortion" patented technology

The invention discloses a pre-deformation method for a two-dimensional code on a cylindrical surface. The method comprises the steps of carrying out lateral pre-deformation treatment on a standard two-dimensional code image according to a cylindrical surface radius to generate a pre-deformation two-dimensional code image corresponding to the cylindrical surface radius; printing the pre-deformation two-dimensional code image on a small-diameter cylindrical commodity so that the two pieces of information obtained from the pre-deformation two-dimensional code image scanned and printed on the cylindrical commodity and a standard two-dimensional code image scanned and printed in the plane are the same, thus the image distortion of a two-dimensional code image printed on a cylindrical surface is eliminated.

A printer includes: a transferring device for transferring a toner image to paper; a fixing device for fixing the toner image onto the paper; a conveyance guide for guiding the paper separated from the transferring device to the fixing device, the conveyance guide being electrically insulated; and a conductive member which is grounded and protrudes from the conveyance guide so as to come in contact with the paper guided by the conveyance guide on the surface opposite to a surface bearing a transferred image.

A device for driving an endless belt of the present invention includes a drive roller and a roller pair adjoining the drive roller at a side where a photoconductive element is positioned and contacting the belt. The eccentricity of the drive roller and that of the roller pair are reduced to reduce the variation of belt speed when the drive roller is controlled at a preselected angular velocity. Even when the drum is eccentric, the device stably operates integrally with the belt without any slip or oscillation.

An image processing apparatus includes an input unit configured to input a characteristic parameter indicating the characteristics of a filter process; a detection unit configured to detect, on the basis of the characteristic parameter input by the input unit, a phase shift amount between the image-captured signal and an obtained signal; a first forming unit configured to form a first prediction tap composed of a plurality of obtained pixels used to predict a target image-captured pixel value; a coefficient obtaining unit configured to obtain a first prediction coefficient generated in accordance with the characteristic parameter and the phase shift amount in order to predict the target image-captured pixel value by product-sum computation with the value of the first prediction tap; and a first computation unit configured to generate a first output signal corresponding to the image-captured signal by performing product-sum computation between the first prediction coefficient.

A method for generating a projected image of a three-dimensional space is disclosed. The projected image generation method according to one embodiment of the present invention comprises the steps of:estimating, on the basis of a reference coordinate system, multiple image obtained poses and multiple depth obtained poses, including the obtained position and obtained angle of each of multiple obtained images and multiple obtained depth values obtained of an actual three-dimensional space; obtaining, on the basis of the reference coordinate system, a user pose including the position and angle ofa user in a virtual three-dimensional space corresponding to the actual three-dimensional space; and generating a projected image formed by projecting the multiple obtained depth values onto at leastone of the multiple obtained images on the basis of a corresponding image obtained pose and at least one corresponding depth obtained pose, corresponding to the user pose.

The invention discloses an MLA-OCT (micro-lens array optical coherence tomography) imaging catheter, an MLA-OCT imaging catheter calibration method, an MLA-OCT imaging system and an MLA-OCT imaging method of the MLA-OCT imaging system. The MLA-OCT imaging catheter comprises an inner tube, an outer tube and a multi-core catheter connector, wherein the inner tube comprises an optical fiber bundle and a microlens array. A light source in the MLA-OCT imaging system is divided into sample light and reference light by an interferometer, the sample light enters a signal arm to enter human tissue, thereference light enters a reference arm to reach an optical delay line, light returned from the two parts includes a first light signal and a second light signal, and the reference arm is provided with an optical delay line device. The MLA-OCT imaging method comprises steps as follows: a data processing device adjusts the position of the optical delay line according to a signal-to-noise ratio of an interference signal until the signal-to-noise ratio is the highest, and at the moment, a delay time value of the optical delay line of each optical fiber is an optical delay line calibration value and is stored in the MLA-OCT system; the MLA-OCT system sets length of the reference arm automatically on the basis of the optical delay line calibration values to detect the interference signal; a retracement controller actuates the MLA-OCT imaging catheter to move axially to perform axial scanning, so that a three-dimensional space image of the human tissue is established.