The first one is the query image. We only use two projection lines of the image in our retrieval. When few lines are used, certain amount of information will be lost. Increasing the number of lines can certainly improve the performance but we need to see the trade-off between recall time and recall precision. Figure 6 .
Query result on complicated images with fine details.
Our signature applies the Radon transform on pixel values of the image. We propose a method using geometrical transform to extract content information of images. It calculates the statistical information while preserving geometrical distribution information in the image. The method is robust against noise and efficient in calculation when certain mapping and indexing technologies are used. Indexing and fuzzy logic-based retrieval of colour images.