The Essential Guide to Image Processing- P24 pps

... of the patterns. In the case of iris recognition, this means we must create a representation that is invariant to the optical size of the iris in the image (which depends upon thedistance to the ... eye and the camera optical magnification factor); the size of the pupil within the iris (which introduces a nonaffine pattern deformation); the location of the iris wit...

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 ... 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

... 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

... respectively, the degree of the resistance to stretching and bending of the contour. The external energy E external is typically defined such that the contour seeks the edges in the image, I: E external ϭϪ 1  0 f ... additional term to maintain fidelity to the input image, to avoid the selection of a stopping time, and to avoid termination of the diffusion at a...

Ngày tải lên: 01/07/2014, 10:43

... examines images at three Z-axis positions to determine whether there is enough variation among the images to indicate the presence of objects in the field to focus on. The sum over the image of the ... Autofocus Autofocus is done by a two-pass algorithm designed to determine first whether the field in question is empty or not, and then to bring the image into sharp...

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

... 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