Design Of Image Capture, Display, Colour Processing And Finally Object Tracking

3240 WordsJun 16, 201513 Pages
INTRODUCTION Aim: Throughout this laboratory we aimed to understand the processes used to achieve the development of image capture, display, colour processing and finally object tracking. In particular, we aim to learn the I2C protocols to program the registers used to configure the camera, how to convert a raw image to a full colour image, detect a selected colour and then track it. Block Diagrams and images for the image processing steps: The block diagram in Figure 1, illustrates the processing blocks that were created to being the image processing steps. It also shows the variables created in the code and how they interact to produce the initial output of display an image from the camera to the screen. The clock for the 640x480 (frame size 800x525) display image runs at a frequency of 25.2 MHz and the clock for the camera runs at a frequency of 48.825 MHz to synchronize the display. The I2C setup, involves using I2C protocols to program registers within the camera. It is a two wire protocol, where one wire acts as the clock to pass from the FPGA to the device, and the other wire is the data wire which is bidirectional. The data wire is a top level entity and requires the setup module to have 3 data connections. These are input data from the camera to the controller, output data from the FPGA controller to the camera and output enable (tristate control), which determines whether the data is input or output. Producing the image on the VGA display, involves using

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