Image scanner

1. Introduction This is the first in a series of articles on using Forth to interact with the real world. We will explore how to control motors of various types (such as servomotors and stepper motors), switch power to devices, and sense the environment. Each article will present a project that can be used to demonstrate the ideas we are going to discuss. In this first article, I want to lay the foundation for the future columns and discuss the use of the PC parallel port to control stepper motors. We will adopt the fantasy that we are working on some microprocessor-based control application and will be using the PC parallel port as a proxy for the digital I/O channels on our controller. To the extent possible, the code will be written in high level (so that we can illustrate the principles clearly), and will be in ANS Forth. 2. The PC Parallel Port First, if you haven't already, go to your back issues of Forth Dimensions and find Ken Merk's article "Forth in Control," (FD XVII/2). In that article, Ken talks about using the PC parallel port for eight digital outputs. We will be expanding on that and use some of those other pins to get input as well as to provide output. A parallel port on the PC is really three address locations which, for conventional use, could be called #Data, #Command, and #Status. The port #Data is at the base address of the parallel port, #Status is at the base address plus one, and #Command is at base plus two. The base address…

The type of scanner is a modality-dependent feature. For example, MRIs and CT scanners are differ in size and functions. In medical ultrasounds, patients are not required to enter a scanner to be tested for CAD. These intrinsic modality-dependent differences were therefore considered as important test-specific attributes. In a DCE on scanning modalities to diagnose focal liver lesions, the type of scanner used was studied and shown to influence patient preferences for diagnostic tests (Whitty et…

Medical Center uses an electronic health record but that does not mean they don’t have to scan/assemble loose paper into EPIC. There are three steps to ensure the quality and efficiency of indexing and scanning forms and loose records into EPIC. The first step is to scan these loose forms. Most of the hospital scans their own records for the most part but for example HIM scans the ERs records and place them in EPIC. On February 9th, Devonn and I got a chance to scan records from OB and a few…

PhotoScan to correctly align them and show details. When zooming in on the cliff, the quality of the images is very good and one can point out geologic features such as rock layers, faulting (Fig. 3), erosional paths (Fig. 4), areas of possible landslides (Fig. 4) and sea caves (Figure 5). Field Mapping Four faults were mapped while walking alongside the cliffs after flying the drones. Dips were 42 to the S, 83 to the N, 70 to the S, and 44 to the south. If more faults were to be mapped, a…

In the present day, film is one of the foremost media forms in the world with nearly all cultures being represented. Film is the product of many different media forms combined into one including photography, painting, music, and sculpture just to name a few. Given that, there is art if film, but an ongoing debate questions whether film itself can be conceived as an art form at all. All films at their bare minimum are photographic images being shown in a rapid succession to give the appearance of…

they’re being lied to straight to their faces by food ads? The answer is photography. The art of capturing the perfect image has evolved from the unscripted Kodak moment to the fake, scripted Hollywood moments people see on TV every day. People can manipulate pictures at the push of a button in today’s culture so why not alter the way food is photographed too. By analyzing the way food is photographed, one can see the false misconceptions, it creates not only literally…

People are inundated with large amounts of images on the daily based that they are more willing to skim through images rather that look and examine the possible situations presented. The artist made an attempt to put the pictures in a different context and hold the viewers attention much like a painting would. At first I did what most people do when it comes to digital images, I took a quick glance and kept looking, it was only on the second walk around did I notice the interesting surrounding…

documenting ferns, allowed people to understand what they looked like, size and scale, giving proof to science and the botanist community on their existence and important documentary need. Her images allowed for women, in her time, to see that there was more to photography then just a portrait shot - also giving women a real stand alone place in a field, science and photography,…

Photography had been around for more than a century and has drastically changed throughout the years. It used to take a ton of heavy equipment in order to take a decent photo. Not only would it take lots of work, but also lots of patients to wait for the photo to develop so that the person can see the image. Now it only takes a smartphone to take a good quality photo and it is not as complicated as it was years ago. Photography was mainly used to record memories and was not for social use. The…

trusted. The “Cinema of Attractions” did not gain its reputation from being ‘windows onto the world’ as photographs were seen, instead it become popular at fairgrounds, alongside conjurers and magicians, as a form of spectacle. At its heart; not reality. Even when watching what is seemingly a very naturalistic video, such as a nature documentary, there is a sense that what we are seeing is constructed, from the tightly controlled edit points to the sharply focused macro animal shots. Gregory…