Beta: Bioprinting engineering technology for academia

Higher STEM education is a field of growing potential, but too many middle school and high school students are not testing proficiently in STEM subjects. The BETA team worked to improve biology classroom engagement through the development of technologies for high school biology experiments. The BETA project team expanded functionality of an existing product line to allow for better student and teacher user experience and the execution of more interesting experiments. The BETA project’s first goal was to create a modular incubating Box for the high school classroom. This Box, called the BETA Box was designed with a variety of sensors to allow for custom temperature and lighting environments for each experiment. It was completed with a clear interface to control the settings and an automatic image capture system. The team also conducted a feasibility study on auto calibration and dual-extrusion for SE3D’s existing 3D bioprinter. The findings of this study led to the incorporation of a force sensor for auto calibration and the evidence to support the feasibility of dual extrusion, although further work is needed. These additions to the current SE3D educational product line will increase effectiveness in the classroom and allow the target audience, high school students, to better engage in STEM education activities

Digital images forever: implementing an imaging system in a cultural institution

This paper deals with the decision-making and challenges that arose out of the implementation of a large-scale digital imaging project by the Powerhouse Museum. With the implementation of the Powerhouse's Imaging Project came the creation of its Image Centre. This paper discusses its role, the services provided, preparation of its equipment and the procedures developed for capturing, storing and retrieving images. Most importantly, the issues of technological change upon an image archive are discussed. The Powerhouse Museum's Imaging System, as it stands today, does what was intended. It delivers images and related data to staff and public for the purposes of research, promotion, education and more. The Museum's Image Centre was set up to scan, manipulate, print and archive images. This Centre has evolved into a high-resolution digital imaging service and continues to create and upload images to the Imaging System. However, without a plan for constant review and update, even archives of beautifully scanned images and comprehensive data are worthless if those archives cannot be reused because the mechanisms for accessing the media - or the applications that they run on, have become obsolete. The Museum's next step, therefore, is a policy for regular re-evaluation.Hosted by the Scholarly Text and Imaging Service (SETIS), the University of Sydney Library, and the Research Institute for Humanities and Social Sciences (RIHSS), the University of Sydney

Navigating the roadblocks to spectral color reproduction: data-efficient multi-channel imaging and spectral color management

Commercialization of spectral imaging for color reproduction will require the identification and traversal of roadblocks to its success. Among the drawbacks associated with spectral reproduction is a tremendous increase in data capture bandwidth and processing throughput. Methods are proposed for attenuating these increases with data-efficient methods based on adaptive multi-channel visible-spectrum capture and with low-dimensional approaches to spectral color management. First, concepts of adaptive spectral capture are explored. Current spectral imaging approaches require tens of camera channels although previous research has shown that five to nine channels can be sufficient for scenes limited to pre-characterized spectra. New camera systems are proposed and evaluated that incorporate adaptive features reducing capture demands to a similar few channels with the advantage that a priori information about expected scenes is not needed at the time of system design. Second, proposals are made to address problems arising from the significant increase in dimensionality within the image processing stage of a spectral image workflow. An Interim Connection Space (ICS) is proposed as a reduced dimensionality bottleneck in the processing workflow allowing support of spectral color management. In combination these investigations into data-efficient approaches improve two critical points in the spectral reproduction workflow: capture and processing. The progress reported here should help the color reproduction community appreciate that the route to data-efficient multi-channel visible spectrum imaging is passable and can be considered for many imaging modalities

Digital images forever: implementing an imaging system in a cultural institution

This paper deals with the decision-making and challenges that arose out of the implementation of a large-scale digital imaging project by the Powerhouse Museum. With the implementation of the Powerhouse's Imaging Project came the creation of its Image Centre. This paper discusses its role, the services provided, preparation of its equipment and the procedures developed for capturing, storing and retrieving images. Most importantly, the issues of technological change upon an image archive are discussed. The Powerhouse Museum's Imaging System, as it stands today, does what was intended. It delivers images and related data to staff and public for the purposes of research, promotion, education and more. The Museum's Image Centre was set up to scan, manipulate, print and archive images. This Centre has evolved into a high-resolution digital imaging service and continues to create and upload images to the Imaging System. However, without a plan for constant review and update, even archives of beautifully scanned images and comprehensive data are worthless if those archives cannot be reused because the mechanisms for accessing the media - or the applications that they run on, have become obsolete. The Museum's next step, therefore, is a policy for regular re-evaluation.Hosted by the Scholarly Text and Imaging Service (SETIS), the University of Sydney Library, and the Research Institute for Humanities and Social Sciences (RIHSS), the University of Sydney

AirCode: Unobtrusive Physical Tags for Digital Fabrication

We present AirCode, a technique that allows the user to tag physically fabricated objects with given information. An AirCode tag consists of a group of carefully designed air pockets placed beneath the object surface. These air pockets are easily produced during the fabrication process of the object, without any additional material or postprocessing. Meanwhile, the air pockets affect only the scattering light transport under the surface, and thus are hard to notice to our naked eyes. But, by using a computational imaging method, the tags become detectable. We present a tool that automates the design of air pockets for the user to encode information. AirCode system also allows the user to retrieve the information from captured images via a robust decoding algorithm. We demonstrate our tagging technique with applications for metadata embedding, robotic grasping, as well as conveying object affordances.Comment: ACM UIST 2017 Technical Paper

Test Targets 4.0: A Collaborative effort exploring the use of scientific methods for color imaging and process control

Test Target 4.0 (TT4.0) is the result of student teamwork to publish a technical journal for a graduate-level course titled: Advance Color Management (Course no. 2081-735-03). Offered by the School of Print Media (SPM) at Rochester Institute of Technology (RIT), the course is a platform to experiment and to realize a new digital imaging paradigm and the dynamics of teamwork.... Team members learn scientific methodology in process control for repeatable color as well as apply ICC-based color management practices in digital workflows. They plan and conduct press run analyses reported in TT4.0, which is printed using facilities available at RIT. In producing this publication, the team learns to integrate design, content creation, digital media, and print production in a seamless workflow.... -p. 4

Test Targets 3.0: A Collaborative effort exploring the use of scientific methods for color imaging and process control

Test Targets 3.0 focuses on the integration and analysis of a number of input devices, color image renderings with the use of a robust CTP system and a full-fledged web offset press … The first section is a collection of test forms … The second section is a compilation of color management practices by the class. – p. v

Computer processing of peach tree decline data

There are no author-identified significant results in this report

A Comparison study of the implementation of digital camera’s RAW and JPEG and scanner’s TIFF file formats, and color management procedures for inkjet textile printing applications

The objective of this research was to evaluate the results and characteristics of utilizing different image file formats in inkjet textile printing. Two format files derived from digital camera (JPEG and RAW format files) and two TIFF format files derived from scanning the transparency films were sent through color management processes and adjustment procedures. These images files were then rendered on 100% cotton fabric using an inkjet textile printer. The evaluation and analysis of the image files and textile patterns were based on visual assessment and measured values. The end result of this experiment was mainly to evaluate the image resolution, color difference, density and texture reproduction; specifically, outlining the advantages and disadvantages between different file formats for digital textile printing application. The investigation indicated that the JPEG, RAW, and TIFF format files appeared to have discrepancy in the original image file, and also had difference in color accuracy when reproducing on cotton fabric, but showed similar results in printable density range, print contrast, and texture reproduction. Photographing in the RAW file format and then converting to the TIFF file format ensures the image of having robust editing capability and precise print result in color accuracy. If using JPEG file format, users must caution the posterization phenomenon and discontinuous tone problem. For transparency film, either scanning in original size and then applying interpolation twice from the original size or scanning directly in target size results in similar performance. However, to achieve color accuracy, users should consider utilizing digital camera and avoid using film in the workflow. The digital textile printing provides a new and easier approach and lowers the boundary for entering the textile printing industry. This technology makes the product customization and one-of-a-kind short run become possible. However, when entering this field, the new users certainly will encounter the problems immediately related to the different image file formats. This research offers a resolution to answer the question about different file formats

Innovative color management methods for RGB printing

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.Includes bibliographical references (leaf 57).The demand for printing excellent quality images has increased tremendously in parallel to the growth spurts in the digital camera market. Printing good quality images consistently, however, remains a difficult and/or expensive venture despite the numerous advances in color technology and printing. To alleviate these issues, a color compensating software solution was developed to utilize the unique Kikuze calibration chart to improve printer output. The software solution integrates with the windows printing process at the operating system level through a UNIDRV plug-in. The plug-in retrieves the data within the print stream, passes it on to the color compensation engine which corrects the color data by mapping input and output colors obtained via a B-spline interpolation algorithm. The rendered image is re-introduced into the print stream for final printing. The prototype achieved successful results and can be packaged with commercial printers after a few refinements.by Curtis N. Vanderpuije.M.Eng