Increasing resolution impacts pixel density how?

Increasing resolution directly leads to an increase in pixel density. Pixel density refers to the concentration of pixels in a given area, typically measured in pixels per inch (PPI). When the resolution of a video image or display is enhanced, this means that more pixels are packed into the same physical dimensions.

For instance, if you have a display that is 1920x1080 pixels (Full HD) and you upgrade it to 3840x2160 pixels (4K), the total number of pixels has significantly increased while the dimensions of the display remain unchanged. This results in higher pixel density, which contributes to sharper and clearer images because the pixels are smaller and closer together.

This relationship is crucial in surveillance scenarios where detail is essential for recognizing faces or license plates, making it vital to understand how resolution impacts overall image quality through increased pixel density. Other factors like bandwidth might be affected as a result of higher resolution, but they do not directly relate to pixel density in the way that resolution does.