Image stitching method and related monitoring camera apparatus

A monitoring camera apparatus with an image stitching function, comprising:

• a first image receiver adapted to acquire a first image;
• a second image receiver adapted to acquire a second image;
• and
• an operational processor electrically connected to the first image receiver and the second image receiver, the operational processor being adapted to detect a plurality of first features in the first image and a plurality of second features in the second image, divide the plurality of first features at least into a first group and a second group in accordance with intervals between the plurality of first features and further dividing the plurality of second features at least into a third group in accordance with intervals between the plurality of second features, analyze the plurality of first features and the plurality of second features via an identification condition to determine whether one of the first group and the second group is matched with the third group, and utilize two matched groups to stitch the first image and the second image;
• wherein the plurality of first features and the plurality of second features are human-made patterns respectively located inside the first image and the second image;
• wherein the identification condition is selected from a group consisting of color, a dimension, a shape, an amount, an arrangement and a combination of the plurality of first features and the plurality of second features.