Artifact meaning biology software#

In this case, at this location, they found nothing. The team at Malin Space Science Systems pores over the images looking for anything unusual.

It is used to monitor changes occurring on the planet, and help the science team select critical science targets. Harrison explained that the CTX acquires grayscale (black & white) images at 6 meters per pixel scale over a swath 30 kilometers wide and provides context images for the MRO HiRISE and CRISM cameras, which can take even higher resolution images. Obviously, there is no structure or anything unusual at that location, except for the northern polar sand dunes. In this image, each pixel represents a distance of about 6.25 meters, a higher resolution than what is available from the Mars Express spacecraft, which takes images at 10 meters per pixel. HereвЂ™s the same location taken by the MRO Context Camera (CTX) on Janu(a crop of the same location as seen above from the original large CTX image, available here): MRO's Context Camera (CTX) image MRO CTX B17_016407_2528_XN_72N029W of the same location. вЂњWe see these from time to time in the MARCI data from MRO.вЂќ вЂњThis looks like a cosmic ray hit,вЂќ said Tanya Harrison, planetary scientist on the science operations team for the Mars Reconnaissance Orbiter Context Camera (CTX) and Mars Color Imager (MARCI) at Malin Space Science Systems. What shows up in this location on Google Mars is just a smattering of about 11 bad pixels from data dropout вЂ“ a linear streak artifact likely caused by a cosmic ray hitting the Mars Express spacecraft while it was taking the image вЂ“ and then that smudge has been badly distorted through image processing when it became part of Google Mars. In reality, this is not a space station, a Mars base or any type of structure вЂ“ created or natural - on the surface of the Red Planet. It was found on Google Mars by an вЂњarmchair astronautвЂќ and breathless conspiracy bloggers have touted this as the most important discovery on Mars yet, and вЂњproof!вЂќ that NASA is hiding their activities. The station is supposedly a 700 ft x 150 ft structure on Mars and by some accounts is colored white with blue and red stripes. The You Tube video showing вЂњBio Station AlphaвЂќ (below) went viral and was even reported on some mainstream media outlets. This error can also occur if the receptor is not placed parallel to the long axis of the teeth.ItвЂ™s time for another episode of вЂњConspiracy Theory of the Week.вЂќ This one involves a supposed secret space station on Mars. When foreshortening occurs when using the paralleling technique, the angulation of the x-ray beam is greater than the long axis plane of the teeth. Correcting this error on bitewings can usually be achieved by inclining the tubehead in a more mesial or distal direction.ДЇoreshortening is the result of overangulation of the x-ray beam. Horizontal overlap is a result of the X- ray beam not passing through the open interproximal area at right angles to a properly positioned detector. In this way, what causes overlapping in dental X rays? This loss of sensitivity varies to some extent from one type of x- ray film to another. This causes the sensitivity of the film to be somewhat dependent on the intensity of the exposing light. Similarly, what happens if X ray film is exposed to light? When a film is directly exposed to x-radiation, the reciprocity law holds true.

Artifact meaning biology software#

X- ray artifacts can present in a variety of ways including abnormal shadows noted on a radiograph or degraded image quality, and have been produced by artificial means from hardware failure, operator error and software (post-processing) artifacts. Simply so, what is an artifact on an X ray? Radiographic errors may be due to technical errors or processing errors Definition : An artifact is a structure or an appearance that is not normally present on the radiograph and is produced by artificial means.