Abstract: Techniques for removing artifacts, such as shadows, from document images are described. A shadow map is generated for a digital image by first determining local background colors using clusters of local pixel intensities. Then, a global reference background color is selected from all pixel intensities of the digital image. Next, a per-pixel scaling factor is determined that maps the local background colors to the global reference background color, which applies localized adjustment to the digital image to remove local shadow.

Abstract: Techniques for removing artifacts, such as shadows, from document images are described. A shadow map is generated for a digital image by first determining local background colors using clusters of local pixel intensities. Then, a global reference background color is selected from all pixel intensities of the digital image. Next, a per-pixel scaling factor is determined that maps the local background colors to the global reference background color, which applies localized adjustment to the digital image to remove local shadow.

Abstract: Burner holders and cartridges of a furnace are described herein, which include a support assembly and a manifold. The support assembly is configured to support one or more burners. For example, the support assembly may include a burner holder with a cutout region, which may allow a burner to be moved between an operational position and a disengaging position by twisting the burner. The cutout region can allow the one or more burners to be removed or installed relatively easily, without the need of removing the manifold from the support assembly. The manifold can be attached to the support assembly by, for example, using one or more orifices as fasteners.

Abstract: A computer-based system for idea capture, organization and management is shown. The system presents a creation template for capturing ideas and building digital content onto electronic notes. The e-notes may be migrated over on to an electronic board in an organization template. In the latter case, e-notes may be grouped, repositioned, deleted, or copied. Multiple users can access the e-board, and it can be saved or sent as a converted image file or PDF. The e-board has multiple layers, allowing for marking directly on the e-board. Various other features and aspects of the system designed to facilitate group collaboration and team development are disclosed.