A device including: a processor configured to: generate compressed data of an image based on a range of pixel value, transmit the compressed data of the image to another device, when a range of pixel value is changed from a first range to a second range, generate difference information of the image, the difference information being information for each third encoding block of the plurality of encoding blocks of the image that indicates a difference between missing information in the third encoding block by a second compression scheme and missing information in the third encoding block by a first compression scheme, each third encoding block being a encoding block that include no pixel whose value is within the first range and that includes a pixel whose value is within the second range, and transmit the difference information of the image to the other device.
