Concolution and correction
![1](drex_bullet_1.png) Edge
The filter performs convolution filter using a edges kernel.
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![2](drex_bullet_2.png) Sharpen
The filter performs convolution filter using a sharpen kernel.
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![3](drex_bullet_3.png) Blur
The filter performs convolution filter using a blur kernel.
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![4](drex_bullet_4.png) Mean
The filter performs each pixel value's averaging with its 8 neighbors.
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![5](drex_bullet_5.png) Custom
Apply a custom kernel to the image.
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![6](drex_bullet_6.png) Gaussian
The filter performs convolution filter using a blur kernel.
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![7](drex_bullet_7.png) Sharpen ex
The filter performs convolution filter using a sharpen kernel.
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