A mask is a black and white image of the same dimensions as the original image (or the region of interest you are working on). Each of the pixels in the mask can have therefore a value of 0 (black) or 1 (white).
When executing operations on the image the mask is used to restrict the result to the pixels that are 1 (selected, active, white) in the mask. In this way the operation restricts to some parts of the image.
Some images like icons have a mask stored in them that is used when computing which parts of the image are transparent or not.
There are two types of masks: layer mask which is pixel depended (described above) and vector mask which is a path that clips out the contents of the layer and is pixel independent. It is much easier to edit vector mask by the way using path anchor points.
Masking is the process of creating a layer on which you paint areas of the image so that you prohibit editing of the image in those areas.
You use masks if you want to perform several operations on certain areas once they are selected.
Masks can have hard or semi transparent edges so the operations that are performed on the unmasked areas can have a sharp border or a soft one.
Image processing is the method of processing data in the form of an image. Image processing is not just the processing of image but also the processing of any data as an image. It provides security.
Gaussian Blur blurs image but you can use it to soften mask edges and to create different effects like Glamour glow.
Layer mask allows you to obscure layer content or its part. Layer mask is gray-scale (bitmap) image: black color hides, white reveals and shades of gray partialy hides layer content. Vector mask is created from paths and can be re-sized without damaging pixel information's.
Image Processing classify as three type. (1) Low level image processing (noise removal, image sharpening, contrast enhancement) (2) Mid level image processing (segmentation) (3) High level image processing (analysis based on output of segmentation)
image processingIn electrical engineering and computer science, image processing is any form of signal processing for which the input is an image, such as photographs or frames of video; the output of image processing can be either an image or a set of characteristics or parameters related to the image. Most image-processing techniques involve treating the image as a two-dimensional signal and applying standard signal-processing techniques to it.
In electrical engineering and computer science, analog image processing is any image processing task conducted on two-dimensional analog signals by analog means (as opposed to digital image processing).
The signal processing hardware can be used for image processing also. DSP processors like TMS 6713 can be used in image processing also. The hardware is required for image capture also.
Its name specifies definition. To get image from any source especially hardware based any source is called as image acquisition in the image processing because without image receiving/acquisition, the processing on the image is not possible. It is the first step in the workflow.
image processing,photographing in different wavelengths is the unique capability in it.
there are two types of image processing. 1.analog 2.digital.
John C. Russ has written: 'Computer-assisted microscopy' -- subject(s): Data processing, Image processing, Microscopy, Optical pattern recognition 'The Image Processing Handbook' 'Journal of Computer-Assisted Microscopy' 'Fractal surfaces' -- subject(s): Surfaces (Physics), Fractals, Measurement 'The Image Processing Handbook, Fifth Edition (Image Processing Handbook)' 'The image processing handbook' -- subject(s): Handbooks, manuals, Handbooks, manuals, etc, Image Processing, Computer-Assisted, Image processing 'Materials Science'
You can apply a mask to any image. A mask helps to protect the area of your image that you do not want to alter. When you mask something, the inside of the mask is the area that can be changed. The mask tool in most design programs is depicted by dotted lines. Some masks are rectangular, circular, free-form, or auto-select.