Elena Rossi
Paint is a versatile and user-friendly graphics editing app for Windows that allows users to create, edit, and manipulate images and drawings. It offers a range of tools for freehand drawing, inserting shapes, filling colours, cropping images, resizing, and adding text. While Paint is great for creating simple drawings and basic image editing, it may not be the best choice for complex adjustments. For instance, to auto-level an image, users might turn to other software such as Paint.NET or Photoshop, which offer more advanced features for adjusting the colour range, gamma index, and tonal balance of an image.
| Characteristics | Values |
|---|---|
| Use | Auto-level is used to equalize the range of colours in an image. |
| Function | The adjustment attempts to bring images that are under or overexposed (too dark or bright) back within a normal range. |
| Interface | Auto-level has no configurable options and does not display a dialog box. |
| Other adjustments | Brightness, Contrast, Hue/Saturation, Posterize, Levels |
| Brightness | To increase the overall brightness of an image, slide the Brightness control to the right. |
| Contrast | Contrast determines the range of tones in an image. To make the colour tones more similar, decrease the contrast. |
| Hue/Saturation | The gamut of hues can be rotated to render the image in a different palette while maintaining the same levels of contrast. |
| Posterize | This adjustment reduces the number of colour values that each pixel can use, giving an image a "posterized" or retro look. |
| Levels | The Levels adjustment is used to correct the tonal range and colour balance of an image by adjusting the intensity levels of image shadows, midtones, and highlights. |
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What You'll Learn
- Auto-levelling an image in Paint desaturates it, removing all colour information
- Auto-levelling attempts to bring under or overexposed images back to a normal range
- Adjusting the shadows and highlights manually can help with auto-levelling
- The image will appear darker if the middle Input slider is moved to the right
- Auto-levelling can be used to equalise the range of colours in an image
Auto-levelling an image in Paint desaturates it, removing all colour information
Auto-leveling an image in Paint desaturates it, removing all colour information and rendering the image in grayscale. This means the resultant image will be reinterpreted in black, white, and shades of grey. Auto-leveling adjusts the colour range and gamma index of an image, reducing the number of colour values that each pixel can use. This adjustment mimics an aged photograph by rendering the image in black and white and adding a sepia tone.
The adjustment attempts to bring images that are underexposed or overexposed (overly dark or bright) back within a normal range. The levels adjustment is split in half, with the left side representing the colour range in the original image or input, and the right side representing the image after adjustments have been made, known as the output. On the left side, there are two colour swatches, one white and one black, each with a numeric representation (255 for white and 0 for black). These indicate the input white and black points. On the right side, three colour swatches appear: one each for the output white and black points and another for the output grey point.
These colours can be adjusted using numeric inputs, a slider, or by double-clicking on the colour swatch itself. The white point on the left side (input) is the control that, when adjusted, becomes the white point on the right side (output). When the adjustment of the white point is performed, colours in the image that are as bright or brighter than this colour will be darkened to be equal to the output white point. Similarly, when the black point is raised, the image will become brighter and more washed out.
The brightness control can also be used to make the image appear lighter or darker. To increase the overall brightness of an image, slide the brightness control to the right. To decrease it, slide the control to the left. The image will then appear darker.
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Auto-levelling attempts to bring under or overexposed images back to a normal range
Auto-levelling is a useful feature that can be used to bring under or overexposed images back to a normal range. It is a complex adjustment that modifies the colour range and gamma index of an image. The gamma index of an image can be adjusted by manipulating the RGB (Red, Green, and Blue) colour channels.
Auto-levelling attempts to equalize the range of colours in an image. It does this by bringing overly dark or bright images back within a normal range. This adjustment also desaturates an image, removing all colour information and rendering the image in grayscale. The resultant image is reinterpreted in black, white, and shades of grey.
The levels adjustment is split in half, with the left side representing the colour range in the original image, or input, and the right side representing the image after adjustments, known as the output. On the left side, there are two colour swatches, one white and one black, each with a numeric representation (255 for white and 0 for black). These indicate the input white and black points. On the right side, three colour swatches appear: one each for the output white and black points, and another for the output grey point.
These colours can be adjusted using numeric inputs, a slider, or by double-clicking on the colour swatch itself. The white point on the left side (input) is the control that, when adjusted, becomes the white point on the right side (output). When the adjustment of the white point is performed, colours in the image that are as bright or brighter than this colour will be darkened to be equal to the output white point.
The default settings of the levels adjustment cause the output histogram (the colour range graphically depicted) to be equal to the input histogram. Every adjustment performed on an image will cause the output histogram to be updated to represent the changes made. When the output histogram is weighted toward the top of the scale, the image will become brighter.
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Adjusting the shadows and highlights manually can help with auto-levelling
Auto-levelling is a feature in Paint that equalizes the range of colours in an image, bringing under or overexposed images back to a normal range. While auto-levelling does not have configurable options, adjusting the shadows and highlights manually can help you achieve the desired result.
The Levels adjustment in Paint allows you to correct the tonal range and colour balance of an image by modifying the intensity levels of shadows, midtones, and highlights. The histogram serves as a visual guide to adjusting the image's key tones. By dragging the black and white Input Levels sliders, you can set the shadow and highlight values to ensure the image uses the full tonal range. Moving the black input slider maps the pixel value to level 0, while moving the white point slider maps it to level 255.
Additionally, you can adjust the brightness of the middle tones without affecting the shadow and highlight values by dragging the grey Input Levels slider or entering values directly in the middle Input Levels text box. A value of 1.0 represents the current unadjusted midtone value. Adjusting the middle Input slider also allows you to modify the gamma in the image, changing the intensity values of the middle range of grey tones without drastically altering the shadows and highlights.
The Shadow/Highlight command in Paint is another useful tool for correcting images with silhouetted subjects due to strong backlighting or subjects that are too close to the camera flash. This command brightens areas of shadow while darkening or lightening based on the surrounding pixels. It offers separate controls for shadows and highlights, including a Midtone Contrast slider, Black Clip option, and White Clip option for fine-tuning the overall contrast of the image.
By manually adjusting the shadows and highlights, you can enhance the image's overall tonal range and ensure that auto-levelling produces the desired outcome.
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The image will appear darker if the middle Input slider is moved to the right
When using Paint.NET, the Levels adjustment feature allows you to modify the brightness and contrast of your image. The left side of the Levels adjustment represents the colour range in the original image, or Input, and the right side represents the image after adjustments have been made, known as the Output. The Input side features two colour swatches, one white and one black, each with a numeric representation (255 for white and 0 for black). These indicate the input white and black points. The Output side, on the other hand, features three colour swatches: one each for the output white and black points, and another for the output grey point.
Additionally, the Output grey point can be adjusted to brighten or darken the overall colour of the image. By moving the middle slider up or increasing the numeric value, the Output grey point becomes brighter, causing the overall image to be brightened. Conversely, moving the middle slider down or decreasing the numeric value will result in a darker grey point and a darker image overall.
It is important to note that the default settings of Levels will result in the output histogram (the colour range graphically depicted) being equal to the input histogram. However, each adjustment performed on the image will cause the output histogram to update and reflect the changes made. Therefore, when the output histogram is weighted toward the top of the scale, the image will become brighter, and when it is weighted toward the bottom, the image will become darker.
Furthermore, the Brightness control in Paint.NET can also be used to make the image appear lighter or darker. Sliding the Brightness control to the right increases the overall brightness, while sliding it to the left decreases the brightness, making the image appear darker.
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Auto-levelling can be used to equalise the range of colours in an image
Auto-levelling is a useful tool to equalise the range of colours in an image. It is a complex adjustment that changes the saturation, or vividness, of the colours in an image. The adjustment attempts to bring images that are underexposed or overexposed (too dark or too bright) back within a normal range. It does this by desaturating an image, removing all colour information and rendering it in grayscale. The resultant image is then reinterpreted in black, white, and shades of grey.
Auto-levelling is also used to adjust the colour range and gamma index of an image. This adjustment reduces the number of colour values that each pixel can use, giving the image a "posterised" or retro look. It mimics an aged photograph by rendering the image in black and white and adding a sepia tone. The gamma index can be adjusted directly in the middle Input Levels box.
The Levels adjustment is split in half, with the left side representing the colour range in the original image, or Input. The right side represents the image after adjustments, known as the Output. On the left, there are two colour swatches, one white and one black, each with a numeric representation (255 for white and 0 for black). These indicate the input white and black points. On the right, there are three colour swatches: one each for the output white and black points, and another for the output grey point. These colours can be adjusted using the numeric inputs, the slider, or by double-clicking on the colour swatch.
The output histogram (the colour range graphically depicted) will be equal to the input histogram when using the default settings. Every adjustment performed on an image will cause the output histogram to update and represent the changes made. When the output histogram is weighted toward the top of the scale, the image will become brighter. If the black point is raised to achieve this, the image will become brighter and more washed out. If the grey point is used, the brightened image will retain more contrast.
Auto-levelling can be used to automate the levels adjustment process, saving time when editing multiple images. However, it may not always produce satisfactory results, and further manual adjustments may be required.
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