The Essential Guide to Image Processing- P19 ppt

... edges of the PIC image. On the other hand, the SPIHT image has considerable blurring, especially on the wall near the left edge of the image. However, if the reader holds the image at the intended ... for the SPIHT image. In particular, the metric picks up the blurring on the wall on the left. The perceptual PSNR (pooled over the whole image) is 46.8 dB...

Ngày tải lên: 01/07/2014, 10:43

... the user can control the mapping between the continuous values of the image and the values sent to the display device. For example, consider the CRT monitor as the output device. The visual tonal ... qualities of the output depend on many factors including the brightness and contrast setting of the monitor, the specific phosphors used in the monitor, the linea...

Ngày tải lên: 01/07/2014, 10:43

... of the basic supporting ideas of linear systems theory as they apply to digital image filtering, and to out- line some of the applications. Special emphasis is given to the topic of linear image enhancement. We ... Application to Image Enhancement of the passive circuit elements (resistors, inductors, capacitors). In optical systems, the integral utilizes the point sp...

Ngày tải lên: 01/07/2014, 10:43

... model (see Chapter 9) for the coefficient distributions. They then fit the parameters of this model adaptively to the noisy image, and then computed the optimal denoising function from the fitted model. 11.5 ... MULTISCALE REPRESENTATIONS Consider the images in the top row of Fig. 11.3. Your visual system is able to recognize effortlessly that the image in the left colum...

Ngày tải lên: 01/07/2014, 10:43

... initially reading the first three bits. If the third bit is 0, then the first two bits correspond to the beta code of the value of the integer data I, ␤(I). If the third bit is one, then the first two ... into the lookup table to obtain the decoded symbol s k , which is then output by the decoder, and the corresponding codeword length l k . Then the next table index...

Ngày tải lên: 01/07/2014, 10:43

... inversely related to the number of bits (bit rate) used to encode the image. The higher the rate, the lower the distortion. Naturally, for a given rate, we would like to incur the minimum possible distortion. ... scaling up the coefficients belonging to the ROI or scaling down the coefficients corresponding to non-ROI regions in the image. The goal of the s...

Ngày tải lên: 01/07/2014, 10:43

... transformation so as to best match the features of the transform to the specific attributes of arbitrary individual images that may not belong to the typical ensemble? To be specific, the wavelet transform ... subbands should incur the same distortion at optimality—else it is possible to steal some bits from the lower distortion bands to the higher distortion bands i...

Ngày tải lên: 01/07/2014, 10:43

... image is fed to the minutiae extractor again. The task of the authentication module is to authenticate the identity of the person who intends to access the system. The person to be authenticated ... embedded in the image. In the authentication detection procedure, the watermar k is extracted from the image and a measure of tampering is produced for the ent...

Ngày tải lên: 01/07/2014, 10:44

Ngày tải lên: 01/07/2014, 10:44

... has to view the latest space telescope images or read about the newest medical image modality to be aware of this. With this introduction,welcome to The Essential Guide to Image Processing! The ... use these VIs to: – transform images using predefined or custom lookup tables, change the contrast information in an image, invert the values in an image, and segment...

Ngày tải lên: 05/06/2014, 11:41