An image processing method is provided. The image processing method is applied in an electronic device. The array of photosensitive pixel units is controlled to expose with different exposure parameters and output multiple frames of color-block image. Each frame of color-block image includes image pixel units arranged in a preset array, each image pixel unit includes a plurality of original pixels, and each photosensitive pixel corresponds to one original pixel. The multiple frames of color-block image are merged to obtain a HDR color-block image. The HDR color-block image is converted to a simulation image using an interpolation algorithm. The simulation image includes simulation pixels arranged in an array, and each photosensitive pixel corresponds to one simulation pixel. An image processing apparatus and an electronic device are also provided.