Adobe ADBCD17648MC Manuel D’Utilisation

Page de 309
201
USING PHOTOSHOP ELEMENTS 8
Filters, effects, styles, and artwork
Last updated 7/26/2011
Texturizer
The Texturizer filter allows you to simulate different texture types or select a file to use as a texture. Texture options 
make images appear as if they were painted onto textures, such as canvas and brick, or viewed through glass blocks.
Video filters
De-Interlace
The De-Interlace filter smooths moving images captured on video by removing either the odd or even interlaced lines 
in a video image. You can choose to replace the discarded lines by duplication or interpolation.
NTSC Colors
The NTSC Colors filter restricts the gamut of colors to those acceptable for television reproduction to prevent 
oversaturated colors from bleeding across television scan lines.
Other filters
High Pass
The High Pass filter retains edge details in the specified radius where sharp color transitions occur and suppresses the 
rest of the image. (A radius of 0.1 pixel keeps only edge pixels.) The filter removes low-frequency detail in an image 
and has an effect opposite to that of the Gaussian Blur filter. 
You can use the High Pass filter to extract line art and large black-and-white areas from scanned images. To do so, 
apply the filter before using the Filter
  > Adjustments
  > Threshold command or converting the image to bitmap mode.
Maximum and Minimum
The Maximum and Minimum filters look at individual pixels in a selection, like the Median filter. Within a specified 
radius, the Maximum and Minimum filters replace the current pixel’s brightness value with the highest or lowest 
brightness value of the surrounding pixels. The Maximum filter has the effect of applying a choke—spreading out 
white areas and choking in black areas. The Minimum filter has the effect of applying a spread—spreading out black 
areas and shrinking white areas. 
Offset
The Offset filter moves a selection a specified amount to the right horizontally or down vertically, leaving an empty 
space at the selection’s original location. Depending on the size of the selection, you can fill the empty area with a 
transparent background, with the edge pixels, or with pixels from the right or bottom edges of an image.
Custom filters
Custom filters let you design your own filter effect. With the Custom filter, you can change the brightness values of 
each pixel in the image according to a predefined mathematical operation known as convolution. Each pixel is 
reassigned a value based on the values of surrounding pixels. You can save the custom filters you create and use them 
with other Photoshop images.