Interpixel Redundancy In Digital Image Processing

Interpixel Redundancy Caused by High Interpixel Correlations within an image ie gray level of any given pixel can be reasonably predicted from the value of its neighbors information carried by individual pixels is relatively small spatial redundancy geometric redundancy interframe redundancy in general interpixel redundancy Interpixel redundancy occurs because adjacent pixels tend to be highly correlated. Interpixel Redundancy Caused by High Interpixel Correlations within an image ie gray level of any given pixel can be reasonably predicted from the value of its neighbors information carried by individual pixels is relatively small spatial redundancy geometric redundancy interframe redundancy in general interpixel redundancy Interpixel redundancy occurs because adjacent pixels tend to be highly correlated. Compression ratio CR n1n2Relative redundancy RD 1 1CR 4. Types of data redundancy Coding Interpixel Psychovisual Coding Redundancy How to assign codes to alphabet In digital image processing Code gray level value or color value Alphabet is used conceptually General approach Find the more frequently used alphabet Use fewer bits to represent the more frequently used alphabet and use more bits for the less frequently used alphabet Coding Redundancy 2 Focus. Psychovisual redundancy using more grey levels than necessary to the human eye. Elements of Visual Perception A Simple Image Model Sampling and Quantization Some Basic Relationships between Pixels Imagining Geometry. N y x f y.

Compute DCT of each block Quantize the resulting values by dividing each coefficient by an integer value and rounding off to the nearest integer.

Hasan Demirel PhD Image Compression Data Redundancy Interpixel Redundancy This type of redundancy is related with the interpixel correlations within an image. Coding redundancy If r k represents the gray levels of an image and each r k occurs with probability p r r k then 01 1k rk. 7 2 Fundamental concepts and theories72 Fundamental concepts and theories 721 Data redundancy. The second kind of redundancy is called a coding redundancy. The corresponding redundancy of 09 implies that 90 of the data in the first data set is redundant. Compute DCT of each block Quantize the resulting values by dividing each coefficient by an integer value and rounding off to the nearest integer.

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Interpixel redundancy in digital image processing. In order to reduce the interpixel redundancies in an image the 2-D pixel array normally used for human viewing and interpretation must be transformed into a more efficient but usually nonvisual format. The wasted space consumed by storage media to Store image information in a digital image. Compression ratio CR n1n2Relative redundancy RD 1 1CR 4.

Interpixel redundancy unnecessary data storage for neighbouring pixels which contain the same information. Types of data redundancy Coding Interpixel Psychovisual Coding Redundancy How to assign codes to alphabet In digital image processing Code gray level value or color value Alphabet is used conceptually General approach Find the more frequently used alphabet Use fewer bits to represent the more frequently used alphabet and use more bits for the less frequently used alphabet Coding Redundancy 2 Focus. Hasan Demirel PhD Image Compression Data Redundancy Interpixel Redundancy This type of redundancy is related with the interpixel correlations within an image.

Interpixel temporal redundancy is the statistical correlation between pixels from successive frames in video sequence. Digital Image Processing Prepared By. 7 2 Fundamental concepts and theories72 Fundamental concepts and theories 721 Data redundancy.

N1 data. The first kind of redundancy is called a pixel redundancy. CR Coding RedundancyIR Interpixel RedundancyPVR Psycho-Visual Redundancy 5.

Third kind of redundancy is called a psycho visual redundancy. Background Digital Image Representation Fundamental Steps in Image Processing Elements of a Digital Image Processing System Digital Image Fundamentals. Temporal redundancy can be exploited using motion compensated predictive coding.

N y x f y. In computer science digital image processing is the use of a digital computer to process digital images through an algorithm. Coding redundancy If r k represents the gray levels of an image and each r k occurs with probability p r r k then 01 1k rk.

Image Enhancement To process an image so that the result is more suitable than the original image for a specific application. Mappings n N y.

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N2 data redundancy ie data after compression.

The second kind of redundancy is called a coding redundancy. The corresponding redundancy of 09 implies that 90 of the data in the first data set is redundant. Types of data redundancy Coding Interpixel Psychovisual Coding Redundancy How to assign codes to alphabet In digital image processing Code gray level value or color value Alphabet is used conceptually General approach Find the more frequently used alphabet Use fewer bits to represent the more frequently used alphabet and use more bits for the less frequently used alphabet Coding Redundancy 2 Focus. Much of the visual contribution of a single pixel is redundant and can be guessed from the values of its neighbors. Hasan Demirel PhD Image Compression Data Redundancy Interpixel Redundancy This type of redundancy is related with the interpixel correlations within an image. Separately encode DC components and transmit data. Background Digital Image Representation Fundamental Steps in Image Processing Elements of a Digital Image Processing System Digital Image Fundamentals. Image Enhancement To process an image so that the result is more suitable than the original image for a specific application. Digital Image Processing Notes What is Digital Image Processing.

Compression ratio CR n1n2Relative redundancy RD 1 1CR 4. Psychovisual redundancy using more grey levels than necessary to the human eye. Digital Image Processing Notes What is Digital Image Processing. Interpixel Redundancy Caused by High Interpixel Correlations within an image ie gray level of any given pixel can be reasonably predicted from the value of its neighbors information carried by individual pixels is relatively small spatial redundancy geometric redundancy interframe redundancy in general interpixel redundancy Interpixel redundancy occurs because adjacent pixels tend to be highly correlated. 7 2 Fundamental concepts and theories72 Fundamental concepts and theories 721 Data redundancy. Temporal redundancy is also called interframe redundancy. Redundancy Interpixel Redundancy R elated to the interpixel correlations within an image s patial redundancy geometric redundancy interframe redundancy M easured through autocorrelation coefficients Transformations that remove interpixel redundancy are called.