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Image Negative Effect Online

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How to use this tool to Image Negative Effect 🤔

  1. Click 👆 on the Choose File(s) button and choose input image files, or you may drag and drop the image files to the Drop area. You may choose one image 🌁 or multiple images 🌃 🌄 🎇. The chosen images are displayed with size information in the input section.
  2. You may change the conversion parameters like quality 🎛, background color, etc., using the sliders, or color input buttons.
  3. Now you can click on the Submit button. This is where the ⛄ magic happens. Your images are sent ➚ to the server for the specified Image Negative Effect operation. This all happens in a lightening speed ⚡.
  4. Once the input images are transformed ✅, they appear in the download section.
  5. You may click 👆 on the big Download button to download ↓ all your transformed images.
  6. There is also a link 🔗 which you can Copy and share it using which you can download the resulting images.
Disclaimer:Please be aware that due to limited server storage, converted images will be automatically purged over time for optimal server performance.



Negative Image Effect

The negative image effect transforms an image by inverting its colors. This effect creates a photo-negative appearance, where light areas appear dark and dark areas appear light.

The color inversion process involves subtracting each color component from the maximum color value (typically 255 for 8-bit color channels) to get the inverted color.

Color Inversion Formula

To apply a negative effect, each pixel's color components (red, green, and blue) are inverted. The new color components \( R', G', B' \) of a pixel are calculated as:

\[ R' = 255 - R \]

\[ G' = 255 - G \]

\[ B' = 255 - B \]

where:

  • \( R \) is the original red component of the pixel.
  • \( G \) is the original green component of the pixel.
  • \( B \) is the original blue component of the pixel.

Example Calculation

Consider a pixel with original color components \( (R, G, B) = (100, 150, 200) \).

The inverted color components are calculated as:

\[ R' = 255 - 100 = 155 \]

\[ G' = 255 - 150 = 105 \]

\[ B' = 255 - 200 = 55 \]

So, the new color of the pixel after applying the negative effect is \( (R', G', B') = (155, 105, 55) \).

Applying the Negative Effect to the Image

The negative effect is applied to the entire image by iterating over each pixel, computing the inverted color components using the color inversion formula, and updating the pixel values with the new inverted colors.

Applying a negative effect to an image inverts its colors, creating a visually striking and altered appearance. The process involves transforming the original pixel colors to their respective complementary colors.