Question

write any two graphic filters with their effects
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Answer 1

With the Filter tool (FilterIcon.png icon) you can open the filter toolbar. Draw offers eleven filter effects. A filter works on the current view of an object and they can be combined. Filters always apply to the entire graphic – it is not possible to use filters to edit only a part of the object.

Invert.png Invert. The colors of an image will be inverted (reversed) so that it appears as a color negative of the image.

Original.jpg Invert1.jpg

Smooth.png Smooth reduces the contrast between neighboring pixels and produces a slight lack of sharpness. If you use the filter several times in a row, the effect will be strengthened.

Original.jpg Smooth1.jpg Smooth2.jpg

Sharpen.png Sharpen increases the contrast between neighboring pixels, emphasizing the brightness difference. This will accentuate the outlines. The effect will be strengthened if you apply the filter several times in a row.

Original.jpg Sharpen1.jpg Sharpen2.jpg

Remnoise.png Remove noise. The filter reduces noise, in which every pixel is compared with its neighbors, and the extreme values (those that deviate in color by a large amount from a mean value) are replaced by a pixel with a mean color value. The amount of picture information does not increase, but because there are not so many contrast changes our brains can better recognize the resulting graphic. This filter tends to make the picture also a little more smooth.

Remnoise1.jpg Remnoise2.jpg Remnoise3.jpg

Solarize.png Solarization was originally a photochemical effect. If the location of the photograph is extremely highly lit, you can experience a reversal of color and brightness. Similarly, entry of light during the developing process reverses the brightness values. These phenomenon were used for artistic production of pictures.

With this effect filter you input a threshold value, above which brightness the color values are reversed (middle picture, threshold value 70%). With the Invert option the whole of the resulting picture will be inverted in color (right picture)