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- Resolution: The number of pixels per inch or per centimeter (i.e. pixel size, e.g., most microscopy cameras have pixel sizes of 65 to 280 nm).
- Bit depth: The number of bits used to represent each pixel (8-, 16-, 32-bit format). This determines the number of different shades of color that can be represented.
- Color model: The system used to represent colors in the image, such as RGB (red, green, blue) or HSL (hue, saturation, lightness).
- Compression: The method used to reduce the size of the image file, if any.
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- Visual information such as color, texture, and shape of objects within the image.
- Metadata such as the date and time the image was captured, camera settings, and geolight-locationsource.
There are many different file formats for images, each with its own strengths and weaknesses. Some of the most common image file formats include:
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