A segment may refer to any of the following:
1. In general, segment refers to the parts into which any object is or may be divided. For example, a text, string, or other data could be broken up into different segments that may or may not be related.
2. With respect to computers, a memory segment or segmentation is a portion of memory that is restricted for use with a current running process. Each is stored in one or more of the segment registers: CS (CodeSegment), DS (DataSegment), SS (StackSegment), or ES/FS/GS (ExtraSegment).
3. An LCD segment is a single bar that is used to help create a character on an LCD. For example, a clock may use a 7-segment LCD to display each of the numbers, as shown in the image. The number "8" is utilizing all seven segments and the number "5" is using five segments.
6. Image segmentation is the division of a digital image, referred to as superpixels, into smaller parts to facilitate ease of analyzation or meaningfulness. Several methods exist to segment an image, including thresholding, clustering, compression-based, histogram-based, edge detection, region-growing, split-and-merge, and many others. For example, with medical imaging, segmentation is used to locate tumors, measuring tissue volume, studying anatomical structure, and general diagnosis and planning of treatments. Other common uses are face, iris, and fingerprint recognition.