Create a new frame that contains common images from two other frames?

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For example, I have two frames for a calendar image of January 2018. Frame 1 has all the days except the SUN column. Frame 2 is missing the month and the Saturday column.

Is there a method or other way of determining the common images from broth Frame 1 and Frame 2 so that a new frame, Frame 3, can be created? Frame 3 shows the columns MON through FRI days 1 to 26 as shared by both Frame 1 and Frame 2.

I intend to use what I learn to match the video frames from dual/stereo cameras that I have set up with two Raspberry Pi.