In order to reduce non-uniform luminance and/or chrominance, a display panel can determine, on a pixel-by-pixel basis in at least a row of pixels, a correction for voltage drops in the display panel. The voltage drop can be estimated based on a state of pixels in the display panel corresponding to at least a portion of a current frame of image data and at least a portion of a previous frame of image data. Moreover, based on the correction, the display plane can modify on the pixel-by-pixel basis in at least the row: a supply voltage applied to the display panel; a digital representation of the image data in the current frame that correspond to the pixels; and pixel drive signals corresponding to the image data in the current frame. Furthermore, the correction may be based on a predefined calibration constant and/or may be dynamically calculated.