Bloomefektit

Bloomefektit, or bloom effects, refer to a family of post-processing techniques used in digital imaging to simulate the diffusion of light in bright areas. The aim is to create a soft glow around intense highlights, mirroring how overexposed or highly scattering light behaves in real cameras and film. The concept has its roots in traditional photography and cinematography and has become a standard tool in computer graphics, video games, and visual effects.

In a typical implementation, the process starts by identifying pixels above a brightness threshold. These bright regions are then processed through a blur, often separable into multiple passes, to spread light beyond the original edges. The blurred result is combined back with the original image, usually using an additive blend, to produce the visible glow. Some variants use multiple bloom layers, color tinting, or a knee function to create a softer transition between dark and bright areas. Common parameters include threshold, blur radius or intensity, gains, and color tint.

Applications of bloomefektit include enhancing realism and perceived contrast in scenes with strong light sources, such as suns, lamps, and reflections. They are widely used in video games, film post-production, and real-time rendering pipelines to convey brightness and atmosphere. However, excessive or poorly tuned bloom can produce halos or glow artifacts, interfere with readability, or impact performance, especially in HDR workflows. Proper calibration with tone mapping and exposure is often necessary to maintain visual balance.