Specifications and Supported Symbols

Data Matrix Code Definition

• A data matrix code is a two-dimensional rectangular array of black and white cells which conveys a string of characters (digits, letters and special characters).

  • It is encoded to achieve maximum packing.

  • Each cell corresponds to a bit of information.

  • Additional redundant bits allow error correction for robust reading of degraded symbols.

• A data matrix code is located using the Finder pattern:

  • The bottom and left edges of a Data Matrix code contain only black cells.

  • The top and right edges have alternating cells.

A data matrix code: finder pattern colored in red and synchronization pattern in blue.

• A data matrix code is characterized by:

  • Its logical size (number of cells).

  • Its encoding type: ECC000 (odd symbol sizes, deprecated) or ECC200 (even symbol sizes).

Note

The data matrix code definition is provided by ISO/IEC and approved as standard ISO/IEC 16022.

EasyMatrixCode Specifications

In a single read operation, EasyMatrixCode locates, unscrambles, decodes, reads and grades the quality of grayscale 2D data matrix codes of any size, contrast, location and orientation (even viewed from the back on a transparent medium), providing they meet the following specifications:

• Minimum cell (= module) size: 3x3 pixels

• Minimum quiet zone (blank zone around the matrix code) width: 1 pixel

All the non-deprecated functionalities of EasyMatrixCode are available for testing in eVision Studio, except for the EMatrixCodeReader::StopProcess ^{.NET Python} method (for asynchronous processing).

Supported Symbols

ECC other than the ECC200

Note

See the ISO/IEC 16022 standard for more information.

Error Correction Table

	Correctable errors %
ECC000	0
ECC050	2.8
ECC080	5.5
ECC100	12.6
ECC140	25

Symbol Table

Size	Capacity (numerical | alphanumerical | byte)
	ECC000			ECC050			ECC080			ECC100			ECC140
	num	alph	byte	num	alph	byte	num	alph	byte	num	alph	byte	num	alph	byte
9x9	6	3	1	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a
11x11	12	8	5	1	1	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a	n/a
13x13	24	16	10	10	6	4	4	3	2	1	1	n/a	n/a	n/a	n/a
15x15	37	25	16	20	13	9	13	9	6	8	5	3	n/a	n/a	n/a
17x17	53	35	23	32	21	14	24	16	10	16	11	7	2	1	1
19x19	72	48	31	46	30	20	36	24	16	25	17	11	6	4	3
21x21	92	61	40	61	41	27	50	33	22	36	24	15	12	8	5
23x23	115	76	50	78	52	34	65	43	28	47	31	20	17	11	7
25x25	140	93	61	97	65	42	82	54	36	60	40	26	24	16	10
27x27	168	112	73	118	78	51	100	67	44	73	49	32	30	20	13
29x29	197	131	86	140	93	61	120	80	52	88	59	38	38	25	16
31x31	229	153	100	164	109	72	141	94	62	104	69	45	46	30	20
33x33	264	176	115	190	126	83	164	109	72	121	81	53	54	36	24
35x35	300	200	131	217	145	95	188	125	82	140	93	61	64	42	28
37x37	339	226	148	246	164	108	214	143	94	159	106	69	73	49	32
39x39	380	253	166	277	185	121	242	161	106	180	120	78	84	56	36
41x41	424	282	185	310	206	135	270	180	118	201	134	88	94	63	41
43x43	469	313	205	344	229	150	301	201	132	224	149	98	106	70	46
45x45	500	345	226	380	253	166	333	222	146	248	165	108	118	78	51
47x47	560	378	248	418	278	183	366	244	160	273	182	119	130	87	57
49x49	596	413	271	457	305	200	402	268	176	300	200	131	144	96	63

ECC200

Note

See the ISO/IEC 16022 standard for more information.

Symbol Table for Square ECC200

Size	Capacity			Correctable errors %
	num	alpha	byte
10x10	6	3	1	25
12x12	10	6	3	25
14x14	16	10	6	28 to 39
16x16	24	16	10	25 to 38
18x18	36	25	16	22 to 34
20x20	44	31	20	23 to 38
22x22	60	43	28	20 to 34
24x24	72	52	34	20 to 35
26x26	88	64	42	19 to 35
32x32	124	91	60	18 to 34
36x36	172	127	84	16 to 30
40x40	228	169	112	15 to 28
44x44	288	214	142	14 to 27
48x48	348	259	172	14 to 27
52x52	408	304	202	15 to 27
64x64	560	418	277	14 to 27
72x72	736	550	365	14 to 26
80x80	912	682	453	15 to 28
88x88	1152	862	573	14 to 27
96x96	1392	1042	693	14 to 27
104x104	1632	1222	813	15 to 28
120x120	2100	1573	1047	14 to 27
132x132	2608	1954	1301	14 to 26
144x144	3116	2335	1555	14 to 27

Symbol Table for Rectangular ECC200

Size	Capacity			Correctable errors %
	num	alpha	byte
8x18	10	6	3	25
8x32	20	13	8	24
12x26	32	22	14	23 to 37
12x36	44	31	20	23 to 38
16x36	64	46	30	21 to 38
16x48	98	72	47	18 to 33

Extended Rectangular Data Matrix DMRE

Note

See the ISO/IEC 21471 standard for more information.

Symbol Table

Size	Capacity			Correctable errors %
	num	alpha	byte
8x48	36	25	16	21 to 36
8x64	48	34	22	21 to 36
8x80	64	46	30	20 to 35
8x96	76	55	36	21 to 38
8x120	98	72	47	20 to 36
8x144	126	93	61	18 to 33
12x64	86	63	41	19 to 34
12x88	128	94	62	18 to 33
16x64	124	91	60	18 to 34
20x36	88	64	42	19 to 35
20x44	112	82	54	19 to 34
20x64	186	124	82	17 to 31
22x48	144	106	70	17 to 32
24x48	160	118	78	17 to 31
24x64	216	160	106	15 to 28
26x40	140	103	68	18 to 32
26x48	180	133	88	16 to 30
26x64	236	175	116	15 to 28