Abstract: An apparatus having a first circuit is disclosed. The first circuit may (i) receive an input signal from an electro-optical sensor and (ii) generate a compressed signal. The first circuit generally includes re-sampler circuits configured to process the input signal to generate output samples. Each output sample may be a linear combination of at least two input samples. Video processing may include at least two tasks among (a) generating a video signal by converting the input signal for an external video monitor, (b) generating a video signal by converting the input signal for a preview screen and (c) generating a video signal by resolution reduction of the input signal before compression. At least two re-sampler circuits may perform different tasks. Still processing generally includes a noise reduction of an input image of the input signal using at least one of the at least two re-sampler circuits.

Abstract: A method of pixel correction is disclosed. The method generally includes the steps of (A) generating a plurality of pixel values from a sensor in response to an optical signal, (B) generating a temperature signal representing a temperature of the sensor and (C) generating a plurality of corrected values by applying a per-pixel correction model to the pixel values, wherein the per-pixel correction model is responsive to the temperature.

Abstract: A method for processing a digital picture is disclosed. The method may include steps (A) to (C). Step (A) may generate a first picture by processing the digital picture using a first noise reduction technique in a circuit. Step (B) may generate a second picture by processing the digital picture using a second noise reduction technique. The first noise reduction technique may achieve a higher noise reduction than the second noise reduction technique. Step (C) may generate an output picture by combining the first picture and the second picture.

Abstract: A method of rate-distortion computations for video compression is disclosed. The method may include steps (A) to (C). Step (A) may generate a plurality of transform coefficients from a residual block of the video using a circuit. Step (B) may generate a block distortion value (i) based on the transform coefficients and (ii) independent of a plurality of inverse transform samples produced from the residual block. Step (C) may generate a rate-distortion value from the block distortion value.

Abstract: An apparatus having a circuit is disclosed. The circuit may be configured to (i) process a digital image received from a camera sensor and (ii) convert the digital image after the processing. The converting generally uses a lookup table-based conversion that performs both (a) a color correction and (b) a tone correction.

Abstract: An apparatus having a circuit is disclosed. The circuit may be configured to (i) process a digital image received from a camera sensor and (ii) color correct at least one pixel of the digital image after the processing. The color correction generally includes a lookup table-based conversion of the pixel from a first luminance-and-chrominance representation to a second luminance-and-chrominance representation.

Abstract: An apparatus having a circuit is disclosed. The circuit may be configured to (i) receive a digital image from an electro-optical sensor, (ii) convert the digital image from a red-green-blue representation to a luminance-and-chrominance representation, (iii) generate a reduced noise representation of the digital image by reducing noise in the luminance-and-chrominance representation and (iv) generate a color corrected representation of the digital image by color correcting the reduced noise representation.

Abstract: An encoder comprising a first circuit and a second circuit. The first circuit may be configured to (i) generate a cropped video signal in response to separating a video signal and (ii) generate overscan information describing a shape of an overscan region. The video signal conveys an image having a picture region containing image information and the overscan region. The cropped video signal conveys the picture region. The second circuit may be configured to generate a digital video bit-stream in response to compressing said cropped video signal. The overscan region is absent from the digital video bit-stream as transmitted from the encoder.

Abstract: A method for processing a source frame is disclosed. The method generally includes the steps of (A) generating an intermediate frame by digitally processing the source frame, wherein the intermediate frame has an intermediate resolution and has an intermediate color space, (B) generating a video frame by down-sampling the intermediate frame, wherein the video frame has a video resolution lower than the intermediate resolution and has a video color space different than the intermediate color space, (C) generating a video stream by compressing the video frame with a video encoding technique and (D) generating a still picture by formatting the intermediate frame with a picture formatting technique, wherein (i) the still picture has the intermediate resolution and (ii) generating the still picture occurs substantially simultaneously with generating the video stream.

Abstract: A method for inverse telecine. The method generally includes the steps of (A) checking if a current field of a plurality of fields in a video sequence repeats in the video sequence according to a pattern-based approach where the current field fits a telecine pattern, (B) checking if the current field repeats according to a first pattern-less approach where the current field complies with at least one of a plurality of rules and (C) generating a signal for an encoder in (i) an asserted state if the current field repeats and (ii) a deasserted state if the current field does not repeat.

Abstract: A method for compressing data samples using randomized quantization bins is disclosed. The method generally comprises steps (A) to (C). Step (A) may generate a size signal having a quantization step size corresponding to the data samples in an input signal using a compression circuit. The data samples generally reside in a range of numbers. Step (B) may generate the randomized quantization bins in the range based on a pseudorandom process. Step (C) may generate a plurality of quantized samples in a compressed signal by quantizing the data samples based on the randomized quantization bins.

Abstract: A method for conveying private or enhancement information in a compressed bit stream comprising the steps of (A) generating a compressed bit stream in response to a first data stream and a plurality of encoding choices and (B) controlling the encoding choices in response to a second data stream comprising one or both of the private information and the enhancement information.

Abstract: A camera system and a method for zooming the camera system is disclosed. The method generally includes the steps of (A) generating an electronic image by sensing an optical image received by the camera, the sensing including electronic cropping to a window size to establish an initial resolution for the electronic image, (B) generating a final image by decimating the electronic image by a decimation factor to a final resolution smaller than the initial resolution and (C) changing a zoom factor for the final image by adjusting both of the decimation factor and the window size.

Abstract: A method of pixel correction is disclosed. The method generally includes the steps of (A) calibrating a per-pixel correction model of a sensor at a plurality of different illumination levels, (B) generating a plurality of pixel values from the sensor in response to an optical signal and (C) generating a plurality of corrected values by applying the per-pixel correction model to the pixel values.

Abstract: A method for deinterlacing a picture is disclosed. The method generally includes the steps of (A) generating a plurality of primary scores by searching along a plurality of primary angles for an edge in the picture proximate a location interlaced with a field of the picture, (B) generating a plurality of neighbor scores by searching for the edge along a plurality of neighbor angles proximate a particular angle of the primary angles corresponding to a particular score of the primary scores having a best value and (C) identifying a best score from a group of scores consisting of the particular score and the neighbor scores to generate an interpolated sample at the location.

Abstract: A method of capturing a still frame is disclosed. The method generally includes the steps of (A) generating a plurality of initial frames with a sensor in response to an optical signal and (B) generating the still frame by combining the initial frames using a noise reduction technique.

Abstract: A method of capturing a still frame is disclosed. The method generally includes the steps of (A) generating a plurality of initial frames with a sensor in response to an optical signal and (B) generating the still frame by combining the initial frames using a noise reduction technique.

Abstract: An apparatus having a buffer and a circuit is disclosed. The buffer may be configured to receive a digital image. The digital image generally has (i) a Bayer color representation and (ii) two initial dimensions in a horizontal direction and a vertical direction respectively. The circuit may be configured to generate a resample image in a signal by down-sampling the digital image in the Bayer color representation such that (i) the resample image has two resample dimensions, (ii) at least one of the resample dimensions is smaller than a respective at least one of the initial dimensions and (iii) the respective at least one initial dimension is a non-integer multiple of the at least one resample dimension.

Abstract: A method for determining a first and a second reference picture used for inter-prediction of a macroblock, comprising the steps of (A) finding a co-located picture and block, (B) determining a reference index, (C) mapping the reference index to a lowest valued reference index in a current reference list and (D) using the reference index to determine the second reference picture.

Abstract: A method for determining a first and a second reference picture used for inter-prediction of a macroblock, comprising the steps of (A) finding a co-located picture and block, (B) determining a reference index, (C) mapping the reference index to a lowest valued reference index in a current reference list and (D) using the reference index to determine the second reference picture.