How many inches is the photo of the electronic document handed in by Chongqing self-taught examination?

The specifications for electronic photo collection in Chongqing area are as follows: (1) Background threshold: the background cloth is light blue, with good drape and light absorption, which can be cotton cloth, wool polyester and so on. (2) Imaging threshold: the upper part of the upper and lower thresholds in the imaging area is empty l/ 10, the head accounts for 7/ 10, the shoulder accounts for l/5, and the left and right thresholds are empty1/0. The minimum size of the collected image is 192mm×l44mm (height× width). The imaging area is 48mm×33mm (height× width). (3) Lighting threshold: photographic lamps are needed, and a front desk lamp basically meets the threshold. It is best to use two side lights, which can be professional photography lights, stage lights or household vertical living room lights. (4) File format threshold: the threshold is stored in jpg format, and the image file name is *. Jpg, where * is the candidate's 12-digit admission ticket number, and the naming rules of the admission ticket number are in accordance with the provisions in DocumentNo. [200 1]30 of the Teaching and Testing Pilot Office. The specific naming rules are: "Admission ticket for higher education self-study exam: city code (2 digits)+county code (. Admission ticket for higher education diploma examination: the last two digits of the registration year+college code (3 digits)+professional code (3 digits)+serial number (4 digits). " (5) Storage threshold: images should be stored according to a certain directory structure. The detailed directory structure is: the first-level directory is the city and county code, the second-level directory is the annual code+examination code, the first three digits of the serial number are the third-level directory, and the last two digits of the serial number are the fourth-level directory.