A method for enhanced image encoding, the method comprising: dividing , by an encoder executing on a first computing machine , a two-dimensional image into at least two overlapping two-dimensional image sections according to a grid size and an overlap margin ; computing , by the encoder , a lightweight CRC index taken of each overlapping image section ; comparing , by the encoder , the lightweight CRC index taken of each overlapping image section to lightweight CRC indexes associated with stored two-dimensional image blocks of a second two-dimensional image; identifying , by the encoder responsive to the comparison of lightweight CRC indexes, a first match between at least one stored image block having a first lightweight CRC index substantially similar to a first lightweight CRC index computed for the at least one overlapping image section ; computing, by the encoder , in response to the first match, a first heavyweight CRC index taken of the at least one overlapping section ; comparing, by the encoder , the first heavyweight CRC index with a second heavyweight CRC index associated with the at least one stored image block; confirming, by the encoder responsive to the comparison of heavyweight CRC indexes, the first match; assigning , by the encoder to the at least one overlapping image section , in response to the confirming, a pointer to a storage location of the at least one stored image block; and transmitting the pointer and overlapping image sections not assigned to the pointer to a second computing machine ; wherein the lightweight CRC indexes are indexes that are faster to compute than the heavyweight CRC indexes but may result in a higher rate of false positive matches between stored image blocks and overlapping image sections than the heavyweight CRC indexes. dividing , by an encoder executing on a first computing machine , a two-dimensional image into at least two overlapping two-dimensional image sections according to a grid size and an overlap margin ; computing , by the encoder , a lightweight CRC index taken of each overlapping image section ; comparing , by the encoder , the lightweight CRC index taken of each overlapping image section to lightweight CRC indexes associated with stored two-dimensional image blocks of a second two-dimensional image; identifying , by the encoder responsive to the comparison of lightweight CRC indexes, a first match between at least one stored image block having a first lightweight CRC index substantially similar to a first lightweight CRC index computed for the at least one overlapping image section ; computing, by the encoder , in response to the first match, a first heavyweight CRC index taken of the at least one overlapping section ; comparing, by the encoder , the first heavyweight CRC index with a second heavyweight CRC index associated with the at least one stored image block; confirming, by the encoder responsive to the comparison of heavyweight CRC indexes, the first match; assigning , by the encoder to the at least one overlapping image section , in response to the confirming, a pointer to a storage location of the at least one stored image block; and transmitting the pointer and overlapping image sections not assigned to the pointer to a second computing machine ; wherein the lightweight CRC indexes are indexes that are faster to compute than the heavyweight CRC indexes but may result in a higher rate of false positive matches between stored image blocks and overlapping image sections than the heavyweight CRC indexes. <EOS>