Abstract: A stereo display system using shape from shading algorithm is an image conversion device connected between a monoscopic endoscope and a 3D monitor. The system applies the algorithm which generates a depth map for a 2D image of video frames. The algorithm first calculates a direction of a light source for the 2D image and based upon the information of light distribution and shading for the 2D image to generate the depth map. The depth map is used to calculate another view of the original 2D image by depth image based rendering algorithm in generation of stereoscopic images. After the new view is rendered, the stereo display system also needs to convert the display format of the stereoscopic images for different kinds of 3D displays. Base on this method, it is necessary to replace the whole monoscopic endoscope with a stereo-endoscope system and no modification is required for the monoscopic endoscope.

Abstract: An image enhancement method for improving color perception of colorblind viewers has an image input step, an image difference area analyzing step, an image color distribution adjusting step, and an image output step. In such method, a normal image and a colorblindness-simulative image are input and calculated to produce a colorblindness-optimized image. Color vision obtained by a colorblind person from the colorblindness-optimized image is substantially identical to that obtained by a person with normal color perception from the normal image.

Abstract: An image enhancement method for improving color perception of colorblind viewers has an image input step, an image difference area analyzing step, an image color distribution adjusting step, and an image output step. In such method, a normal image and a colorblindness-simulative image are input and calculated to produce a colorblindness-optimized image. Color vision obtained by a colorblind person from the colorblindness-optimized image is substantially identical to that obtained by a person with normal color perception from the normal image.

Abstract: A positioning device, an image projecting system and a method for overlapping images are provided. The positioning device is applied to a Computed Tomography process and a Magnetic Resonance Imaging process. The positioning device includes a patch and a positioning mark. The positioning mark is adapted to be mounted on the patch, and includes a Computed Tomography mark and a Magnetic Resonance Imaging mark.

Abstract: An X-ray imaging system for generating space transfer functions has an X-ray machine, a check board and a host. The X-ray machine has an X-ray camera and an image camera to respectively take an X-ray image and a reference image for a calibration pattern on the check board. The host has a controller electrically connected to the X-ray camera and the image camera to receive the X-ray image and the reference image. The controller generates parameters and space transfer functions according to the X-ray image and the reference image.

Abstract: A 3D model reconstruction acquisition includes the steps of preparing a transparent container and at least one image capture device, wherein an object is placed in the transparent container and a liquid is received in the transparent container; keeping the liquid level rising or lowering to allow the liquid level to pass through a surface of the object and then keeping capturing a series of the images; computing a liquid-level equation for each of the images by using curves of the images between the object and the incremental or decremental liquid level confined by the transparent container; computing 3D coordinates of the curves in accordance with the liquid-level equation of each image; and collecting 3D coordinates of all of the curves to create a 3D model of the object. In addition, the acquisition can be done in the environment having water and thus be applied to various environments.

Abstract: A 3D model reconstruction acquisition includes the steps of preparing a transparent container and at least one image capture device, wherein an object is placed in the transparent container and a liquid is received in the transparent container; keeping the liquid level rising or lowering to allow the liquid level to pass through a surface of the object and then keeping capturing a series of the images; computing a liquid-level equation for each of the images by using curves of the images between the object and the incremental or decremental liquid level confined by the transparent container; computing 3D coordinates of the curves in accordance with the liquid-level equation of each image; and collecting 3D coordinates of all of the curves to create a 3D model of the object. In addition, the acquisition can be done in the environment having water and thus be applied to various environments.