A matrix-array detector comprising: • a set of pixels that are sensitive to a physical phenomenon and arranged into a matrix in at least one row and multiple columns, each pixel generating a signal dependent on the physical phenomenon, • Q column conductors (Col), each connecting the one or more pixels of one and the same column and intended to transport the signals generated by the pixels, the columns (Col) and associated conductors being ordered according to their physical distribution, q representing a current column, • N multiplexers (A, B, C, D), each multiplexer comprising K inputs ordered from 1 to K, k representing the rank of the current input, each input receiving signals from one of the column conductors (Col), K being greater than or equal to 2, Q being at least equal to K 2, the N multiplexers (A, B, C, D) being ordered from 1 to Q/K, n representing the rank of the current multiplexer, each multiplexer (A, B, C, D) comprising an output (SA, SB, SC, SD), the N multiplexers (A, B, C, D) sequentially delivering at their output the signals received in the order of their inputs, the N multiplexers (A, B, C, D) being configured to simultaneously deliver the signals received from inputs of the same rank k, characterised in that it comprises: • a network of switches allowing signals present at the outputs (SA, SB, SC, SD) of the multiplexers (A, B, C, D) to be mixed, so as to regroup the signals from immediately adjacent pixels belonging to distinct columns, and in that: • the column of rank q, where q is between 1 and K 2, is connected to the multiplexer of rank n = q modulo K, • the column of rank q, where q is between 1 and K 2, is connected to the input of rank k equal to the default integer portion of (q - 1)/K with 1 added, denoted by: k = ⌊ q − 1 / K ⌋ + 1. • a set of pixels that are sensitive to a physical phenomenon and arranged into a matrix in at least one row and multiple columns, each pixel generating a signal dependent on the physical phenomenon, • Q column conductors (Col), each connecting the one or more pixels of one and the same column and intended to transport the signals generated by the pixels, the columns (Col) and associated conductors being ordered according to their physical distribution, q representing a current column, • N multiplexers (A, B, C, D), each multiplexer comprising K inputs ordered from 1 to K, k representing the rank of the current input, each input receiving signals from one of the column conductors (Col), K being greater than or equal to 2, Q being at least equal to K 2, the N multiplexers (A, B, C, D) being ordered from 1 to Q/K, n representing the rank of the current multiplexer, each multiplexer (A, B, C, D) comprising an output (SA, SB, SC, SD), the N multiplexers (A, B, C, D) sequentially delivering at their output the signals received in the order of their inputs, the N multiplexers (A, B, C, D) being configured to simultaneously deliver the signals received from inputs of the same rank k, • a network of switches allowing signals present at the outputs (SA, SB, SC, SD) of the multiplexers (A, B, C, D) to be mixed, so as to regroup the signals from immediately adjacent pixels belonging to distinct columns, • the column of rank q, where q is between 1 and K 2, is connected to the multiplexer of rank n = q modulo K, • the column of rank q, where q is between 1 and K 2, is connected to the input of rank k equal to the default integer portion of (q - 1)/K with 1 added, denoted by: k = ⌊ q − 1 / K ⌋ + 1.