Patent application number | Description | Published |
20090195797 | SENSITIVITY MATRIX DETERMINATION FOR ADAPTIVE COLOR CONTROL - What is provided are a novel system and method for determining a sensitivity matrix for adaptive color control in a color marking device capable of performing device independent color correction. In one embodiment, a determination is made as to what control operation the color marking device is being characterized for. Nominal CMYK values are then selected based on the determined control operation. If the control operation is a gray balancing operation, the nominal CMYK values are selected using C=M=Y=L* and K*=0 values. Otherwise, the nominal CMYK values are selected using a CMYK to L*a*b* printer map. Color parameters are determined for the CMYK values based on the selected nominal CMYK values. A sensitivity matrix is then generated from the color parameters and CMYK values. The method facilitates calibration of dynamically varying color reproduction devices. | 08-06-2009 |
20090296110 | IMAGE INDEXED RENDERING OF IMAGES FOR TUNING IMAGES FROM SINGLE OR MULTIPLE PRINT ENGINES - A system and method for rendering an image provide for segmenting the image into a plurality of segments based on image content and, for each identified segment, identifying a rendering profile from a set of rendering profiles. The rendering profile may include a look up table for converting pixels from a first color space, such as a device independent color space, e.g., RGB, to second color space, such as a device dependent color space, e.g., CMYK. The identified rendering profile is applied to the respective segment and the segments to which the profiles have been applied are combined into a print job for rendering on print media by an associated color output device or otherwise output. The system allows different segments in the image to be processed through different rendering profiles most suited to the objects that the segments contain. | 12-03-2009 |
20090297179 | TONER CONCENTRATION SYSTEM CONTROL WITH STATE ESTIMATORS AND STATE FEEDBACK METHODS - The present disclosure provides for an imaging machine having an imaging member including a method for maintaining a toner concentration. The method for maintaining the toner concentration comprises: determining a toner concentration (TC) measurement using a sensor; computing a state estimator output from the TC measurement and a pre-stored estimator gain matrix, K | 12-03-2009 |
20090300055 | Accurate content-based indexing and retrieval system - The computer algorithm described which indexes and retrieves images. A query in the form of an image object or an image facilitates image retrieval in order to retrieve several images close to user's request. A thumbnail form of rank ordered images is provided for viewing. The user selects the images and down loads the images for inclusion in the job. The images are then ripped and printed. | 12-03-2009 |
20100253960 | SENSITIVITY MATRIX DETERMINATION VIA CHAIN RULE OF DIFFERENTIATION - What is provided are a novel system and method for generating a sensitivity matrix for adaptive color control in a color marking device. In one embodiment, a first and second color space is identified. A total of N intermediate components are identified. Component sensitivity matrices are calculated and a sensitivity matrix is generated using a chain rule of differentiation over each successive component sensitivity matrix. The present method facilitates calibration of dynamically varying color reproduction devices. | 10-07-2010 |
20130079649 | ESTIMATING CARDIAC PULSE RECOVERY FROM MULTI-CHANNEL SOURCE DATA VIA CONSTRAINED SOURCE SEPARATION - What is disclosed is a system and method for recovering a patient's cardiac pulse rate from a sequence of video images recording of that patient. In one embodiment, a reference signal of a particular frequency is generated at predetermined frequency intervals and a constrained source separation is performed on the source data to obtain an estimation of the source signal intended to be recovered. The reference signal is updated and constrained source separation is again performed. These operations are repeated for all frequencies of the reference signal. The frequency at which a minimum error is achieved is determined to be the subject's recovered cardiac pulse frequency. In such a manner, the source signal is extracted and recovered reliably from captured multi-channel RGB signals or multispectral signals. The teachings hereof find their uses in a variety of medical solutions including various military, security and telemedicine applications. Various embodiments are disclosed. | 03-28-2013 |
20140160355 | PROCESSING A VIDEO FOR SPATIAL AND TEMPORAL MAGNIFICATION WITH MINIMIZED IMAGE DEGRADATION - What is disclosed is a novel video processing system and method wherein a plurality of image frames of a video captured using a video camera with a spatial resolution of (M×N) in the (x, y) direction, respectively, and a temporal resolution (T) in frames per unit of time. A first and second magnification factor f | 06-12-2014 |