The Essential Guide to Image Processing- P10 doc

... both cases, all three scales of images are digital, and so there is potential loss of information relative to the original analog image. However, the per- ceptual quality of the images can easilybe ... 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 Guid...

Ngày tải lên: 05/06/2014, 11:41

... 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 ... countries around the world. Chapter 2 isdevotedtoa more detailed description of the image processing programs available on the disk, how to use them, and how to...

Ngày tải lên: 01/07/2014, 10:43

... 3.5 Effect of additive offset on the image histogram. Top: original image histogram; bottom: positive (left) and negative (right) offsets shift the histogram to the right and to the left, respectively. 3000 2000 1000 0 50 ... bitmaps onto an image without destroying the image data. Use these VIs to overlay the results of your inspection application onto the images...

Ngày tải lên: 01/07/2014, 10:43

... properties of the DFT are the same, or similar to those of the DSFT, certain important properties are different. These effects arise from sampling the DSFT to create the DFT. 5.4.4 Image Periodicity ... N 8 (n). If the initial coordinate n 0 of an 8-connected contour is known, then the rest of the contour can be represented without loss of information by the directions...

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

... impossible to numerically specify the image values to the publisher of this book. We have to rely on the experience of the company to produce images which faithfully reproduce those given to them. ... they fit the data. In order to keep the dis- cussion focused, I will limit the discussion to discretized grayscale photographic images. Many of the principles are...

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

... to the image detail features. The distinct response of the CWM smoother in different regions of the image is due to the fact that images are non- stationary in nature. Abrupt changes in the image s ... inserted into the image in order to expand the size of the image, and the major task is the inter- polation of the new pixels from the surrounding origin...

Ngày tải lên: 01/07/2014, 10:43

... uncorrupted image from a blurred and noisy one. Essentially, it tries to perform an operation on the image that is the inverse of the imperfections in the image formation system. In the use of image restoration ... is the noise that corrupts the blurred image. Clearly the objective of image restoration is to make an estimate f (n 1 ,n 2 ) of the ideal image,...

Ngày tải lên: 01/07/2014, 10:43

... image restoration algorithms. Let g be the observed noisy and blurred image, D the operator describing the degradation system, f the input to the system, and v the noise added to the output image. ...  2 is to constrain the high-frequency energy of the restored image, therefore requiring that the restored image is smooth. On the other hand, by enforcing ine...

Ngày tải lên: 01/07/2014, 10:43

... values of ␣ the restored image is “smooth” while the error image contains the high-frequency information of the original image (large bias of the estimate), while as ␣ decreases the restored image becomes ... the observed surface coil images, D the bias fields, and v the noise in the observed images. This is the same degradation system as in (15.1), and therefore...

Ngày tải lên: 01/07/2014, 10:43

... derived from the 29 images to yield a total of 779 distorted images, which, together with the undistorted images, were then evaluated by human subjects. The raw scores were processed to y ield difference ... variables. The reason for the monotonic relation between the square of the structure term of the SSIM index applied in the subband filtered domain and the IFC index...

Ngày tải lên: 01/07/2014, 10:43

... used to calculate the texture masking factor. The edge proximity factor refers to the fact that the higher the luminance difference of an edge is, the less the visual sensitivity is at the vicinity ... order to ensure image authentication, the encrypted signal is decrypted by the photographer’s public key and the hashed version of the original image is compar...

Ngày tải lên: 01/07/2014, 10:43

... detector are used to produce a 2D projection image of the patient. The image has intensity proportional to the amount by which the X-rays are attenuated as they pass through the body, i.e., the 3D ... attached to the front of the camera as illustrated in Fig. 26.2(a). The collimated camera is only sensitive to gamma rays traveling in a direction parallel to th...

Ngày tải lên: 01/07/2014, 10:44