Indoor visible light communication (VLC) based on next generation environmentally friendly lighting is important in energy conservation. However, at present, the efficient characterization of VLC channels, including sophisticated reflection, has not yet been proposed. In this letter, we present a fast and comparably accurate channel characterization algorithm called independent reflecting element interaction characterization (IREIC), which can be used to describe optical power, illuminance, and impulse response. However, at present, the efficient characterization of VLC channels, including sophisticated reflection, has not yet been proposed. In this letter, we present a fast and comparably accurate channel characterization algorithm called independent reflective element interaction characterization (IREIC), which can be used to describe optical power, illuminance, and impulse response.