摘要:
Briefly, in accordance with one embodiment of the invention, a method of using hue to interpolate color pixel signals includes the following. For a particular pixel location in a subsampled color image, differences in hue are compared for two mutually orthogonal directions across the particular pixel location. A color signal value for that particular pixel location for a color plane other than the color plane of the pixel signal value in the subsampled color image of that location is computed. The computation includes relatively weighing the differences in hue values, the relative weights depending, at least in part, on the difference in hue value in one direction relative to the other.
摘要:
Embodiments of a method of generating Huffman code length information are disclosed. In one such embodiment, a data structure is employed, although, of course, the invention is not limited in scope to the particular embodiments disclosed.
摘要:
A method of encoding a watermark into a digital image. The method includes partitioning an original image into blocks and then determining a variance value of each block. The blocks are then arranged according to the variance values. A number of selected blocks are identified, where the number depends upon the size of the watermark. The blocks selected are then arranged by their location. Data from the watermark is used to replace bits in a representation of each of the selected blocks with data from the watermark. A method of decoding is also discussed.
摘要:
In one embodiment, the present invention includes a method to obtain a query image and search a database corresponding to object images for a solution set having a maximum similarity to the query image using fuzzy logic. Also in certain embodiments, based on fuzzy logic, the database may be partitioned into multiple sets based on a fuzzy similarity analysis of a measure of the object images to various thresholds.
摘要:
An architecture for a multiply and accumulate two-dimensional separable symmetric filter. The architecture includes a binary tree adder producing sums of samples of an incoming signal. A multiplier then multiplies sums from the binary tree adder with filter coefficients producing filtered products. An accumulation adder to sums the filtered products and produce a filtered output.
摘要:
Several embodiments in accordance with the invention are disclosed. An embodiment for compressing a gray scale image is described and an embodiment for decompressing the codebook produced by compressing the gray scale image is described. Of course, the invention is not limited to only gray scale images, however.
摘要:
A symmetric digital filter. The filter has the dimensions N rows by N columns. There are a predetermined number of 8-input adders, and a predetermined number of 4-input adders each able to receive inputs from samples of an incoming signal. In addition, there are a predetermined number of parallel multipliers. The parallel multipliers receive output signals from the 8-input adders and the 4-input adders, and multiply the partial sums by coefficients of the digital filter, applying the digital filter to the input signal.