Exam 2: Digital Imaging Processing Concepts

The purpose of the ____ class of processing is to generate an image that is more pleasing to the observer.

What is the first step in digitizing an image in which the image is first divided into an array of pixels?

The matrix size has an effect on the detail, or bit depth, of the image.

All digital radiography imaging modalities including CR, flat-panel digital radiography, digital mammography, and digital fluoroscopy, utilize digital image processing as a central feature of their operations.

The output from a digital radiography detector is an analog (electrical)signal, which is sent to a(n)____________________.

Which of the following would generate an output signal in which its intensity varies continuously depending on the location of the light on the image?

What class of digital image processing allows measurements and statistics to be performed, as well as image segmentation, feature extraction, and classification of objects?

The digital image processing technique of unsharp masking uses the ___________________ image produced from the low-pass filtering process and subtracts it from the original image to produce a sharp image.

In radiology, what is the viewing task of the radiologist?

____ is a process whereby the brightness levels obtained from sampling are assigned an integer (zero or a negative or positive number), called a gray level.

The images obtained in radiology can be represented in two domains, based on how they are acquired: the spatial location domain, and the ____________________ domain.

It is important that technologists and radiologists alike become well versed in the nature, scope, and principles of ____________________.

Temporal averaging involves averaging a set of images to reduce image ____________________.

The processing of images using a computer is called ____.

Both past and current day processing technologies include a wide range of image processing algorithms for use in digital radiology.

The term ___________________ implies that all the pixels in the entire input image are used to change the value of a pixel in the output image.

The inverse ____________________, denoted by FT -1, is used to transform an image in the frequency domain back to the spatial location domain for viewing by radiologists and technologists.

Digital image pre-processing is a range of techniques that allow the user to change the appearance of a digital image displayed on a monitor for viewing and interpretation.

Image processing operations are intended to change the intensity values of the pixels in the input image and display the resulting changes in the output image, with the goal of changing the characteristics of the image to suit the needs of the observer in order to enhance diagnosis.

The digital image processing technique known as ____________________ is also intended to change the contrast and brightness of an image.