A dishwasher comprising: a washing tub (103, 203); a storage portion (107, 207) installed in the washing tub (103, 203) to be withdrawable through an opening of the washing tub (103, 203) and configured to store a dish; a door (104, 204) configured to open and close the opening (103a, 127a); an imaging portion (3, 119, 219) installed around the opening of the washing tub (103, 203) and configured to capture an image of a part of the storage portion (107, 207) that is taken out of the washing tub (103, 203) and the dish stored in the storage portion (107, 207), when the part of the storage portion is taken out of the washing tub (103, 203); and a processor (121, 221) configured to: when the storage portion (107, 207) starts to move into the washing tub (103, 203), detect a feature point provided in the storage portion (107, 207) from an image captured by the imaging portion (3, 119, 219), detect a position identification pattern provided on the door (104, 204) from the image captured by the imaging portion (3, 119, 219), and identify a position of the storage portion (107, 207) based on the distance between the detected feature point and the position identification pattern in the image; and when the storage portion (107, 207) is installed in the washing tub (103, 203), identify a placement area in which the dish is stored based on an area in which the position identification pattern is not identified in the image and the position of the storage portion (107, 207). a washing tub (103, 203); a storage portion (107, 207) installed in the washing tub (103, 203) to be withdrawable through an opening of the washing tub (103, 203) and configured to store a dish; a door (104, 204) configured to open and close the opening (103a, 127a); an imaging portion (3, 119, 219) installed around the opening of the washing tub (103, 203) and configured to capture an image of a part of the storage portion (107, 207) that is taken out of the washing tub (103, 203) and the dish stored in the storage portion (107, 207), when the part of the storage portion is taken out of the washing tub (103, 203); and a processor (121, 221) configured to: when the storage portion (107, 207) starts to move into the washing tub (103, 203), detect a feature point provided in the storage portion (107, 207) from an image captured by the imaging portion (3, 119, 219), detect a position identification pattern provided on the door (104, 204) from the image captured by the imaging portion (3, 119, 219), and identify a position of the storage portion (107, 207) based on the distance between the detected feature point and the position identification pattern in the image; and when the storage portion (107, 207) is installed in the washing tub (103, 203), identify a placement area in which the dish is stored based on an area in which the position identification pattern is not identified in the image and the position of the storage portion (107, 207). when the storage portion (107, 207) starts to move into the washing tub (103, 203), detect a feature point provided in the storage portion (107, 207) from an image captured by the imaging portion (3, 119, 219), detect a position identification pattern provided on the door (104, 204) from the image captured by the imaging portion (3, 119, 219), and identify a position of the storage portion (107, 207) based on the distance between the detected feature point and the position identification pattern in the image; and when the storage portion (107, 207) is installed in the washing tub (103, 203), identify a placement area in which the dish is stored based on an area in which the position identification pattern is not identified in the image and the position of the storage portion (107, 207).