An image processing method for an electronic device, wherein the electronic device comprises an imaging apparatus comprising an image sensor, the image sensor comprises an array of photosensitive pixel units and an array of filter units arranged on the array of photosensitive pixel units, the filter units are arranged in a Bayer array, each filter unit corresponds to one photosensitive pixel unit, and each photosensitive pixel unit comprises a plurality of photosensitive pixels being adjacent to each other and having a same color, the image processing method comprises: controlling the image sensor to output a color-block image, wherein, the color-block image comprises image pixel units arranged in a preset array, wherein the preset array comprises the Bayer array, each image pixel unit corresponds to one photosensitive pixel unit, each image pixel unit comprises a plurality of original pixels adjacent to each other, and each photosensitive pixel corresponds to one original pixel; determining a predetermined area on the color-block image according to a user input; converting a first part of the color-block image into a first simulation image using a first interpolation algorithm, wherein the first part of the color-block image is in the predetermined area, the first simulation image comprises first simulation pixels arranged in the Bayer array, and each photosensitive pixel corresponds to one first simulation pixel; converting a second part of the color-block image into a second simulation image using a second interpolation algorithm, wherein the second part of the color-block image is outside the predetermined area, the second simulation image comprises second simulation pixels arranged in the Bayer array, each photosensitive pixel corresponds to one second simulation pixel, and a complexity of the second interpolation algorithm is less than that of the first interpolation algorithm; and merging the first simulation image and the second simulation image to generate a simulation image corresponding to the color-block image. controlling the image sensor to output a color-block image, wherein, the color-block image comprises image pixel units arranged in a preset array, wherein the preset array comprises the Bayer array, each image pixel unit corresponds to one photosensitive pixel unit, each image pixel unit comprises a plurality of original pixels adjacent to each other, and each photosensitive pixel corresponds to one original pixel; determining a predetermined area on the color-block image according to a user input; converting a first part of the color-block image into a first simulation image using a first interpolation algorithm, wherein the first part of the color-block image is in the predetermined area, the first simulation image comprises first simulation pixels arranged in the Bayer array, and each photosensitive pixel corresponds to one first simulation pixel; converting a second part of the color-block image into a second simulation image using a second interpolation algorithm, wherein the second part of the color-block image is outside the predetermined area, the second simulation image comprises second simulation pixels arranged in the Bayer array, each photosensitive pixel corresponds to one second simulation pixel, and a complexity of the second interpolation algorithm is less than that of the first interpolation algorithm; and merging the first simulation image and the second simulation image to generate a simulation image corresponding to the color-block image.