Digital Image Processing

The "Radius" parameter in Median Filter determines the size of the median filter kernel, which affects the smoothness of the sharpened image. A larger radius results in a smoother image, while a smaller radius produces a less pronounced sharpening effect.

Unsharp Mask is a sharpening technique that selectively enhances the edges of objects in an image, making them appear sharper and more defined. It is particularly effective for images with a lot of fine details, such as landscapes or architecture.

The "Amount" parameter in Unsharp Mask controls the overall strength of the sharpening effect. Increasing the amount value intensifies the sharpening, making the edges more pronounced, while decreasing the amount value reduces the sharpening effect.

Gaussian Blur is a sharpening technique that applies a Gaussian blur filter to the image, followed by a subtraction of the blurred image from the original image. This technique is particularly effective for images with large, smooth areas, such as portraits or product shots, as it enhances edges without introducing excessive noise.

The "Radius" parameter in Gaussian Blur determines the size of the Gaussian blur kernel, which affects the smoothness of the blurred image. A larger radius results in a smoother blur, while a smaller radius produces a less pronounced blur.

Color correction involves adjusting the color balance, saturation, and hue of an image to achieve accurate and visually appealing colors.

Cloning involves copying pixels from one part of an image and pasting them onto another part to remove unwanted objects or blemishes, resulting in a seamless and clean product image.

Levels adjustment involves adjusting the black point, white point, and mid-tones of an image to optimize the overall brightness, contrast, and tonal range.

Upscaling refers to the process of converting lower-resolution video content to a higher resolution, typically done by home theater systems to improve the quality of older or lower-quality video sources.

The JPEG image compression standard uses the discrete cosine transform (DCT) to convert the image into a frequency domain representation, which is then quantized and compressed.

The H.264 video compression standard uses a combination of block-based motion compensation, discrete cosine transform (DCT), quantization, and entropy coding to achieve high compression ratios.

Unsharp Mask is a sharpening technique that selectively enhances the edges of an image, while preserving the overall smoothness of the image. It is commonly used for portrait photography because it can help to define the subject's features and create a more visually appealing image.

The Unsharp Mask filter has three parameters: Amount, Radius, and Threshold. Contrast is not a parameter of the Unsharp Mask filter.

The High Pass Filter sharpening technique is best suited for images with a lot of fine detail because it selectively enhances the high-frequency details in the image, while preserving the overall smoothness of the image.

The Median Filter sharpening technique is best suited for images with a lot of noise or grain because it selectively reduces noise and grain while preserving the overall sharpness of the image.