Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Unsharp masking

The definition of convolution is readily extended to the -dimensional case. A convolution is frequently used in many fields of science and in digital image processing (blurring, unsharp masking). [Pg.34]

Spatial Enhancement 72 Unsharp Masking 72 Adaptive Histogram Equalization 73 Multiscale Image Enhancement 74 Peripheral Enhancement 75... [Pg.69]

Fig. 5.3. Effect of unsharp masking on a mammogram with microcaicifi-cations. On the left, the originai image is shown. The right figure shows the processing resuit obtained with a = 1 mm and/a sigmoid function with siope 1... Fig. 5.3. Effect of unsharp masking on a mammogram with microcaicifi-cations. On the left, the originai image is shown. The right figure shows the processing resuit obtained with a = 1 mm and/a sigmoid function with siope 1...
Fig. S.4. Unsharp masking of a mammogram obtained with a Ge Senographe 2000D.The original image (a) is processed using the following settings a = 1 mm, slope = 1 (b) a = 1 cm, slope = 1 (c) o = 5 mm, slope = 4 (d)... Fig. S.4. Unsharp masking of a mammogram obtained with a Ge Senographe 2000D.The original image (a) is processed using the following settings a = 1 mm, slope = 1 (b) a = 1 cm, slope = 1 (c) o = 5 mm, slope = 4 (d)...
Loo L-N, Doi K, Metz CE (1985) Investigation of basic imaging properties in digital radiography. 4. Effect of unsharp masking on the detectability of simple patterns. Med Phys 12 209-214... [Pg.104]

Region Adaptive, Unsharp Masking Based Lanczos-3 Interpolation for 2-D Up-Sampling Crisp-Rule Versus Fuzzy-Rule Based Approach... [Pg.47]

Keywords Image and video processing Unsharp masking Lanczos-3 interpolation Variance Up-sampling Fuzzy logic... [Pg.47]

Region Adaptive, Unsharp Masking Based Lanczos-3 Interpolation... [Pg.49]

Fig. 1 Region adaptive unsharp masking based Lanczos-3 interpoiation using crisp-rule based algorithm... Fig. 1 Region adaptive unsharp masking based Lanczos-3 interpoiation using crisp-rule based algorithm...
Subtract the blurred video frame from the original to generate the region adaptive unsharp mask. [Pg.52]

Let gi(jc, y, n) and /(x, y, n) denote the blurred video sequence using region adaptive Gaussian mask and the original video sequence respectively. Now the region adaptive unsharp mask is given by ... [Pg.52]

Fig. 3 Block diagram of the proposed fuzzy weighted, region adaptive unsharp masking based Lanczos-3 interpolation technique... Fig. 3 Block diagram of the proposed fuzzy weighted, region adaptive unsharp masking based Lanczos-3 interpolation technique...
Now, the de-fuzzified crisp output w<,is used to update the centfal weight of the Gaussian mask for the subsequent region adaptive unsharp masking operation. [Pg.63]

Fuzzy Weighted Region Adaptive Unsharp Masking... [Pg.63]

The Fuzzy weighted, region adaptive unsharp masking operation is used to sharpen a video intra frame by subtracting the unsharp or smoothed version of it from the original. The smooth version of a video intra frame is obtained by blurring it using... [Pg.63]

The blurred video frame is subtracted from the original. The resulting difference is called as the unsharp mask. This operation is repeated for all the frames. [Pg.64]

The resulting unsharp mask is further enhanced by Laplacian operator. [Pg.64]

The modified unsharp mask is then added to the original sub-sampled intra frame to obtain the sub-sampled sharpened sequence for more improved performance. [Pg.64]

See other pages where Unsharp masking is mentioned: [Pg.57]    [Pg.41]    [Pg.34]    [Pg.72]    [Pg.72]    [Pg.73]    [Pg.73]    [Pg.82]    [Pg.103]    [Pg.49]    [Pg.50]    [Pg.51]    [Pg.51]    [Pg.51]    [Pg.52]    [Pg.52]    [Pg.52]    [Pg.57]    [Pg.58]    [Pg.64]   
See also in sourсe #XX -- [ Pg.72 ]



SEARCH



© 2024 chempedia.info