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How is image data acquired after the x-ray photons pass through the patient?
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What are the differences between Image processing and computer graphics?
CG (Computer Graphics ) refers to processing of creating a new image from Geometry , Lighting parameters , Materials and Textures .Using a Computer or any other digital media While DIP(Digital Image Processing) is the process of manipulating an image acquired through some device . The image too often will be acquired from photographs,scanners , medical equipments.
What part of an image intensification tube converts the X-ray image into a visible image?
Input Phosphor. The x-ray image intensifier converts the transmitted x rays into a brightened, visible light image. Within an image intensifier, the input phosphor converts the x-ray photons to light photons, which are then converted to photoelectrons within the photocathode. The electrons are accelerated and focused by a series of electrodes striking the output phosphor, which converts the accelerated electrons into light photons that may be captured by various imaging devices.
In radiology what is the term SID?
SID stands for Source to Image Distance. This is the distance between the source of photons (anode) and the image receptor.
How do you acquired image in second and third and fourth generation of ct scan?
 4th Generation: continuous movement of the patient table along the cephalocaudal direction (z-axis) of the scanner. Axial slices were generated through interpolation along the z-axis prior to Filtered Back- Projection (FBP) reconstruction
How does a lens form image?
It changes the path of the light rays (or rather the photons) radiating from the object in question.
Is a candle flame seen because it is luminious?
A candle flame is seen because the carbon hydrogen bonds in paraffin are being broken and energy is released as photons. The photons activate the photoreceptors in your retina to form an "image", then that image travels to the back of the brain through the optic nerve to be interpreted. The carbon and hydrogen atoms form new bonds with oxygen with their electrons in a lower energy state(as carbon dioxide and water).
Difference between Digital image processing and computer graphics?
There is always a confusion among the newbies about the difference between Image Processing and Computer Graphics. Unless specifically mentioned , Computer Graphics is all about Synthesizing a new image from Geometry , Lighting parameters , Materials and Textures . The Emphasis is on Digital Image Synthesis. Image Processing is the process of manipulating an image acquired through some device . The image too often will be acquired from photographs,scanners , medical equipments. The emphasis is on Analysis and Enhancement of the image. Computer Vision is an area where Image Analysis is used a lot. Raster Operations dominate in the case of image processing. In the case of Computer Graphics , you will mix vector and raster operations to generate the final image.
How do mirrors form a image?
We see objects in a mirror, because a mirror, when hit by particles of light called photons, reflects the photons back to us and some reach, and enter, our eyes. by Ronan Lavery.
How do mirrors form a virtual image?
We see objects in a mirror, because a mirror, when hit by particles of light called photons, reflects the photons back to us and some reach, and enter, our eyes. by Ronan Lavery.
If you take your glasses off why do images appear blurred when looking in a mirror After all the image on mirror is only a few inches away?
Technically, the image originates from the same distance from your eyes as if you were looking straight at it (rather than through a mirror). This is because the image does not originate from the mirror per se, but from the object itself. The mirror merely changes the directions of the photons, but does not refocus or create a new image. Therefore, the distance from your eye to the object is the real distance of the image.
What is an image your brain perceives even through no light rays pass through the image?
A Virtual Image
Why does the iris contract in very bright light?
By contracting it reduces the number of photons penetrating further and helps to form a clear image.
