An image transmission device (100) includes a compression unit (16) to generate first compression images (5) which are obtained by irreversibly compressing divided images, and to generate second compression images (6) which are obtained by reversibly compressing each of the first compression images (5), a decompression unit (17) to decompress each of the first compression images (5) as decompression images (7), a division sum image generation unit (12) to generate a division sum image (imgSUM), an error sum image generation unit (13) to generate an error sum image (ΔimgSUM), a judgment unit (14) to generate judgment data (Dj), and a transmission unit (15) to transmit the second compression images (6), the division sum image (imgSUM), the error sum image (ΔimgSUM) and the judgment data (Dj).