Does this increase megapixels, reduce noise or improve modulation transfer function (MTF) of the acquired image?
Actually, crosstalk causes noise during the color correction part of the image processing chain. This happens because raw colors need to be sent through a color correction matrix to render true colors. When there is a lot of crosstalk, there is an increase in the off-diagonal terms in the correction matrix, which results in increased noise. MTF (Modulation Transfer Function) is basically contrast versus spatial frequency. Imagine photons hitting the pixel; they create carriers, and instead of being collected right on the spot, some will spread out. So, you get point-spread or an increase in spot size. When this happens, contrast and MTF decrease. What is dark current? It is the current that’s generated in the dark as the name implies. When photons hit the sensor, they generate electron-hole pairs, resulting in a photocurrent. But even when no photons are hitting the sensor, there is still current within the silicon that comes from thermal generation. This dark current produces a false
Actually, crosstalk causes noise during the color correction part of the image processing chain. This happens because raw colors need to be sent through a color correction matrix to render true colors. When there is a lot of crosstalk, there is an increase in the off-diagonal terms in the correction matrix, which results in increased noise. MTF (Modulation Transfer Function) is basically contrast versus spatial frequency. Imagine photons hitting the pixel; they create carriers, and instead of being collected right on the spot, some will spread out. So, you get point-spread or an increase in spot size. When this happens, contrast and MTF decrease. What is dark current? It is the current that’s generated in the dark as the name implies. When photons hit the sensor, they generate electron-hole pairs, resulting in a photocurrent. But even when no photons are hitting the sensor, there is still current within the silicon that comes from thermal generation. This dark current produces a false
Related Questions
- Does this increase megapixels, reduce noise or improve modulation transfer function (MTF) of the acquired image?
- Is an edge target or a slit target more appropriate for MTF (Modulation Transfer Function) measurement?
- Whats the difference between MTF (Modulation Transfer Function) and CTF (Contrast Transfer Function)?
