How to use Filters in Photoshop

dung
0

The Filter feature in Photoshop is widely utilized, but are you familiar with all of its capabilities? Dive into the following article to gain comprehensive knowledge about the myriad features of Filters in Photoshop!



1 – Blur (blur)

Box Blur: Box Blur is a type of image blur based on the average color value of surrounding pixels, which is useful for creating special effects. Blur can be corrected by increasing or decreasing the average color area size of the pixels.

Gaussian Blur: Quickly blur the selection by an adjustable degree. The higher the Radius value, the stronger the blur. Box Blur and Gaussian Blur are difficult to distinguish at first glance, but if you increase the Blur level gradually you will see: Box Blur blurs the image from the color edges, and Gaussian Blur blurs in a way that homogenizes the edge colors. together.

Lens Blur: Lens Blur adds blur to the image to create the effect of a narrower depth of field, so that some objects in the image are in focus, while others are blurred around. This command is like the focus application of a digital camera or the camera of a smartphone.

Motion Blur: Blur in a specific direction from -360 degrees to +360 degrees and specified intensity from 1 - 999. The effect of this filter is like taking a photo of a moving subject.

Radial Blur: This is a very powerful effect. Blur in a richer and more varied way in the direction of the spokes, radiating.

Shape Blur: The Shape Blur effect allows to blur according to a specified shape.

This shape only applies to each pixel, so no matter what blur you choose, the difference is not clear for us to see.

Smart Blur: Accurately blur the image. Do the task of refining the array of colors. It converts the image to a simple form of color pixels, in short, monochromats the array of images, turning the image taken after conversion into a watercolor painting.

Surface Blur: Surface Blur effect allows blurring, creating smooth, smooth surfaces, removing dots and dots while preserving edge detail.

2 – Distort
Displace: Distort the image with a PSD image.

Pinch: Amount (spin): if it is a positive number, it will shrink from the center, if it is a negative number, it will bulge from the center.

Polar Coordinates: Converts the selection from perpendicular coordinates to polar coordinates and vice versa.

Ripple: Create a ripple effect on a selection or the entire image.

Shear: Distort the image along the curve.

Spherize: Distort the image by sphere, radiating from the center to the edge of the entire selection / image, unlike the Pinch command - which affects only a small area from the center of the radiating.

Twirl: Swirl the image stronger towards the center. This effect helps to create unique backgrounds.

Wave: Create strong ripples.

3 – Noise: A group of filters whose main function is to adjust the pixels on the image that are grainy, grainy, or de-grained.

Add Noise: The Add Noise filter has the function of creating particles for the image, making the image look like a sand picture or simulating smoothness, sharpness ...

Despeckle: The Despeckle filter detects the grain between the intersecting arrays and blurs it to reduce noise, but still retains the average sharpness for the details of the whole. Since Despeckle doesn't have any options, it accidentally "smooths" both the background and border of the part (though not much).

Dust & Scratches: Filters reduce visual noise by changing adjacent pixels with the predominant color in the array.

Median: The Median filter gathers pixels of similar brightness and color into uniform arrays, eliminating or reducing the appearance of noisy pixels or unwanted color spots.

Reduce Noise: This filter supports reducing color noise and brightness noise, with a 2-stage adjustment system: Basic and Advanced.

4 – Pixelate

Color Halftone: bring the image to a circular pixel format.

Crystalize: This filter fragmentes the image into pixels that are (randomly) polygonal (next to each other).

Facet: In theory, the Facet filter creates a layer like solid color blocks. You can use this filter to make an image look like a hand painted or an abstract painting. Set the image to low resolution and try using this filter and you will see the results.

Fragment: The image after applying the Fragment filter looks a bit opaque and fine, the purpose of which is to suppress the sharpness of the pixels.

Mezzotint: bring each pixel to the basic color in the form of Dot, Line, Stroke.

Mosaic: fragment the image into monochrome squares.

Pointilize: Similar to how the filters above work, the Pointilize filter segmentes the image into random, sticky points that also randomly create the impression that colored points are floating on the working page.

5 – Render

Clouds: Create clouds using random values ​​that transform between foreground and background colors.

Difference Clouds: Still the same Clouds effect, but combined with the Difference blend mode. There are also no more options, the results are also random, because of the Difference, the resulting colors tend to be darker than the foreground and background colors.

Fibers: The Fibers command combines foreground and background colors to simulate fibers, textures, etc., that are woven into continuous fibers.

Lens Flare: Simulate the phenomenon of light refraction, extremely bright straight into the camera > also known as backlit phenomenon.

Lighting Effects: The Lighting Effects filter allows you to adjust the lighting style, light source type, lighting properties, and the channel containing the texture pattern.

6 – Sharpen

Sharpen: Basic image sharpening, automatic mode, applies to the whole image, is not selective and does not provide any options.

Sharpen Edges: Similar to Sharpen, but focuses more on outlines, object borders in the image, also automatic and no other options.

Sharpen More: Each time you apply it, you will increase Sharpen by 1 level each time.

Smart Sharpen: This smart sharpening filter has 2 modes: Basic and Advanced.

Basic mode:
– Amount: degree of edge sharpening. Pixels with intermediate colors are created, so the larger the Amount, the denser the pixels, the more obvious the difference from the original image.

– Radius: The rotation or sharp chamfer of the pixel. This parameter is best not to exceed 5px.

– Remove: helps to remove noise factors such as: Gaussian Blur, Lens Blur, Motion Blur (only Motion Blur can apply the Angle below it)

- More Accurate: the edge sharpness is more accurate, which means more aliasing, so if you have a high Radius parameter and apply Remove, you should not choose this.

Advanced mode:
Sharpen card (sharpen): same as Basic mode

Shadow (applies to dark areas) and Highlight (applies to highlights) tabs

– Fade Amount: the “fading” of the light / dark color array. The intermediate pixels have a color closer to the dominant light/dark tone, so even if you increase this parameter, it won't change much, but the image will look smoother, not as harsh as the Amount of Basic.

– Tonal Width: the spread of the dominant light/dark color.

– Radius: the difference between the arrays of pixels.

Unsharp Mask: Sharper sharpening mode than Smart Sharpen. The Amount and Radius parameters are the same as above, but because this filter is only "strong" and does not have many "deep" options like Smart Sharpen, aliasing noise is unavoidable. Thanks to the Threshold option, anti-aliasing created by the two parameters above, "smooths" areas of noise or dispersion. Threshold can range from 0 to 255 levels, but when Radius < 10, Threshold will lose its effect if the parameter exceeds 100.

7 – Stylize
Diffuse: Shuffle, scatter pixels close together to make the selection less sharp.

Embos: Make the selection appear raised or concave by converting the fill color to gray and remapping the edges with the original fill color in black-and-white.

Extrude: Creates cubes or pyramids on the original image, looking like a evenly fragmented explosion effect. However, it still preserves the color of the image.

Find Edges: Unify the image with a white background, based on the transition difference from the dark and light areas to define the border and highlight the border with a darker color. The darker the edges, the more obvious the position where there is a greater color difference between light and dark.

Solarize: Blends a negative with a positive similar to when a print is exposed.
Tiles: Fragments the image into a series of tiles and shifts them slightly (randomly).
Trace Contour: Find transitions between the brightest areas and draw thin outlines on them using different color channels.

– The higher the light-dark contrast, the darker the color there.

– The color of the border, although said to be according to the color channel, is in fact a contrasting color with the color of the original image.
Wind: Creates very small horizontal lines on the image to simulate the crosswind effect.

8. Other
Custom: Although the name is "custom", we actually only affect the brightness / darkness of the image by applying to the area there a specific number.

How it works: the image is (simulated) divided into 25 cells (called the "matrix" area) as shown in the options window. If you want an area on the image to be brighter, enter a positive number in that box, if you want that area to be darker, enter a negative number. The larger the number, the brighter/darker that spot on the image will be. The number used ranges from -999 to 999, the reflection effect is very strong, so we almost only use it in the range -50 to 50. The adjacent cells belong to nearly the same color array (color similarity). degrees), the accuracy of the number cells will not be high. We don't need to fill in all the boxes with numbers.

– Scale: the light dispersion of the pixels. Scale ranges from 1 to 9999. When Scale = 1, the pixels will be at the maximum brightness of the parameter entered into the matrix. Therefore, when the matrix contains larger numbers, the image is more intensely burned, grainy, and even the edges in the image are deviated. When increasing Scale = 2, the brightness of the pixels is divided in half, and so on, increasing the scale, the brightness decreases in binary.

– Offset: color compensation for Scale. If Scale is only aimed at amplifying the brightness of pixels in numerically populated areas of the matrix, Offset will retain the color of the image and spread the light evenly throughout the image. Offset is more effective  when the parameter is larger than Scale between 1 and 40 units. Beyond this range, the image will be blurred or discolored.

The great thing about this Custom filter is that the image looks sharper when you apply the parameters in the Matrix, Scale and Offset in harmony.

In addition, Custom also allows to save the custom as a template so that the next time it can be loaded to use again.
Maximum: The Maximum filter identifies and amplifies the influence range of the pixels with the highest brightness from widening to maximum.

Minimum: If Maximum focuses on bright spots, Minimum focuses on amplifying dark points, and similarly, its Radius is also very strong.

Offset: As the name implies: Offset, this filter is based on the coordinates, details, border color of the image (or selection) to compensate for the gap created by moving the image coordinates. the origin that we have set for the parameters.


Tags:

Post a Comment

0Comments

Post a Comment (0)