3D city modelling from airborne imagery includes mainly two parts: (1) image processing procedures and (2) 3D modelling for manmade objects such as buildings, roads and other objects. Line extraction and stereo matching are usually utilized as an image processing procedures. However, there are some issues for automatic man-made object modelling. In particular, spatial data acquisition of buildi...

Creating a 3D model from photos require an estimate of the position and orientation (pose) of the camera for each photo that is acquired. This paper presents a method to estimate the camera pose using only image data. The images are acquired at a low frequency using a stereo rig, consisting of two rigidly attached SLR cameras. Features are extracted and an optimization problem is solved for eac...

Rendering synthetic simulations into real world scenes is an important application of both Computer Graphics (CG) and Computer Vision (CV). CV techniques have been used to reconstruct the 3D models of the real world scenes. As part of my course project, I’ve implemented computer vision modules for calibrating camera, computing stereo, computing depth-maps, computing 3D models and a graphics int...

Watermarking has become an important tool for multimedia object creator or distributor to address the growing concern of multimedia owners. An attempt has been made to develop a complete secure digital stereo image non-blind watermarking system for effective copyright protection. The objective is to embed by watermarking into one stereo image the information needed to recover the other stereo p...

We study the problem of shape reconstruction from stereo images based on a weighted area minimization process of a depth function. As a simple example we present an efficient shape reconstruction from computer generated autostereograms. A minimal surface area based correlation is applied to accurately reconstruct the surface structure embedded first in one autostereogram image and next in two o...

To authenticate and protect stereo image simultaneously, this paper proposes a depth perception based multipurpose stereo image watermarking method for three dimensional television systems. The proposed method embeds semi-fragile and robust watermark for different purpose. In order to assure quality of watermarked stereo images, binocular perception is used to divide stereo image into region of...

The paper presents a data and task parallel low-level image processing environment for distributed memory systems. Image processing operators are parallelized by data decomposition using algorithmic skeletons. Image processing applications are parallelized by task decomposition, based on the image application task graph. In this way, an image processing application can be parallelized both by d...

Here, a TMS320C6416 DSK board is integrated with two CMOS color image sensors to construct a new stereovision platform instead of current PC based or multi-CPU combination structures for detecting moving objects. A novel moving object detecting strategy is proposed by combining the image temporal differencing and the sum of absolute difference (SAD) matching schemes. This system can detect and ...

The utility of cluster computers (Beowulfs) for efficient parallel image processing of large-scale mosaics and stereo image correlations is presented. The parallelization of existing serial software using the message passing interface (MPI) is described. Almost perfect reduction of the required wall-clock time with increasing number of CPUs is reported. This true parallelization approach differ...

Disparity map generation is a significant component of vision-based driver assistance systems. This report describes an efficient implementation of a belief propagation algorithm on GPUs that can be used to speed up stereo image processing. For evaluation purposes, different kinds of images have been used: reference images from the Middlebury stereo website, and real-world stereo sequences, sel...