Method, apparatus, and computer-readable medium for stitching

1. A method of stitching, the method comprising:

(a) sensing, by a first sensor, a movement of a work piece relative to a sewing head;

(b) sensing, by a second sensor, a movement of the work piece relative to the sewing head;

(c) detecting, by a processor, that the second sensor is one of (i) not sensing movement of the work piece, and (ii) sensing invalid movement of the work piece;

(d) determining, by the processor, a translational and rotational movement of the work piece relative to the sewing head based on the sensed movement of the first sensor; and

(d) altering, by the processor, a speed of a reciprocating needle in response to the determined translational and rotational movement.

2. The method according to claim 1 , wherein the determining comprises associating the sensed movement of the work piece by the first sensor for both the first sensor and the second sensor.

3. The method according to claim 2 , wherein the first sensor and the second sensor are optical sensors.

4. An apparatus for stitching, the apparatus comprising:

a sewing head including a reciprocating needle;

a first and a second sensor for sensing a movement of a work piece relative to the sewing head;

a memory including computer program instructions; and

a processor, wherein the sewing head including the reciprocating needle, the first sensor, the second sensor, the memory and the processor are configured to cause the apparatus to at least:

sense, by the first sensor, a movement of a work piece relative to the sewing head;

sense, by the second sensor, a movement of the work piece relative to the sewing head;

detect that the second sensor is one of (i) not sensing movement of the work piece, and (ii) sensing invalid movement of the work piece;

determine, by the processor, a translational and rotational movement of the work piece relative to the sewing head based on the sensed movement of the first sensor; and

alter, by the processor, a speed of a reciprocating needle in response to the determined translational and rotational movement.

5. The apparatus according to claim 4 , wherein the determining comprises associating the sensed movement of the work piece by the first sensor for both the first sensor and the second sensor.

6. The apparatus according to claim 5 , wherein the first sensor and the second sensor are optical sensors.

7. A non-transitory computer-readable medium tangibly comprising computer program instructions which when executed on a processor of an apparatus causes the apparatus to at least:

sense, by a first sensor, a movement of a work piece relative to a sewing head;

sense, by a second sensor, a movement of the work piece relative to the sewing head;

detect that the second sensor is one of (i) not sensing movement of the work piece, and (ii) sensing invalid movement of the work piece;

determine, by the processor, a translational and a rotational movement of the work piece relative to the sewing head based on the sensed movement of the first sensor and the second sensor; and

alter, by the processor, a speed of a reciprocating needle in response to the determined translational and rotational movement.

8. The non-transitory computer-readable medium according to claim 7 , wherein the determining comprises associating the sensed movement of the work piece by the first sensor for both the first sensor and the second sensor.

9. The non-transitory computer-readable medium according to claim 8 , wherein the first sensor and the second sensor are optical sensors.