32 results about "Population count" patented technology

Instructions and logic provide SIMD vector population count functionality. Some embodiments store in each data field of a portion of n data fields of a vector register or memory vector, a plurality of bits of data. In a processor, a SIMD instruction for a vector population count is executed, such that for that portion of the n data fields in the vector register or memory vector, the occurrences of binary values equal to each of a first one or more predetermined binary values, are counted and the counted occurrences are stored, in a portion of a destination register corresponding to the portion of the n data fields in the vector register or memory vector, as a first one or more counts corresponding to the first one or more predetermined binary values.

A method and a data processing system by which population count (popcount) operations are efficiently performed without incurring the latency and loss of critical processing cycles and bandwidth of real time processing. The method comprises: identifying data to be stored to memory for which a popcount may need to be determined; speculatively performing a popcount operation on the data as a background process of the processor while the data is being stored to memory; storing the data to a first memory location; and storing a value of the popcount generated by the popcount operation within a second memory location. The method further comprises: determining a size of data; determining a granular level at which the popcount operation on the data will be performed; and reserving a size of said second memory location that is sufficiently large to hold the value of the popcount.

Instructions and logic provide SIMD vector population count functionality. Some embodiments store in each data field of a portion of n data fields of a vector register or memory vector, at least two bits of data. In a processor, a SIMD instruction for a vector population count is executed, such that for that portion of the n data fields in the vector register or memory vector, the occurrences of binary values equal to each of a first one or more predetermined binary values, are counted and the counted occurrences are stored, in a portion of a destination register corresponding to the portion of the n data fields in the vector register or memory vector, as a first one or more counts corresponding to the first one or more predetermined binary values.

A circuit and method provides an estimate of a population count (popcount) of a plurality of input bit values. In one form the input bit values represent respective nodes of an integrated circuit. An approximation circuit uses an approximation input stage which receives a plurality of data inputs and has a plurality of logic circuits. Each logic circuit provides a single bit output. The approximation circuit provides monotonic accuracy. A reduction tree receives the single bit outputs of the plurality of logic circuits and provides an approximate count of how many of the plurality of data inputs are asserted. Size and speed are improved by providing the estimate as opposed to an exact value.

A hardware accelerator includes a bitmap processor that processes a bitmap structure for multiple list population. A population count processor processes population counts for data and aggregates the population counts. The bitmap data structure includes bitmap bit fields interleaved with aggregated population count fields.

The present invention provides a single image crowd counting algorithm based on a multi-column convolutional neural network, wherein the multi-column convolutional neural network has three sub-networks, each sub-network uses a different size of the convolution kernel, and the input of each sub-network For the same image, after four convolutions and two poolings, the feature maps output by the three sub-networks are linked together in the "channel" dimension, and then a 1×1 kernel convolution is used to obtain the density map of the crowd . The crowd density obtained by the invention is better than the existing algorithm.

The invention relates to an adaptive crowd counting method. First, use the cumulative integral feature pedestrian detector to detect pedestrians to obtain a large number of detection candidate frames, and then preprocess the obtained candidate frames. Next, this paper extracts the space, time and color features of each preprocessed candidate frame; based on These features, the present invention clusters the candidate frames with the Didicre mixture model and Gibbs sampling theory; in this way, to obtain the area of ​​crowd clusters; next, this paper uses the crowd counting method based on corner points To perform a preliminary count of the crowd in each crowd agglomeration area; through the relationship between the counting result and the feature point, the present invention judges the crowd density. For different densities, this paper selects different data fusion methods to improve the accuracy of the counting result. The method of the invention improves the stability and accuracy of crowd counting detection.

A circuit includes a plurality of selection circuits. Each of the plurality of selection circuits has a first input, a second input, a control input, and an output. Each of the first inputs receives one of a plurality of correlated signals. Each of the second inputs receives one of a plurality of uncorrelated signals. Each of the control inputs receives a correlation mode control signal, and each of the outputs provides the one of the plurality of correlated signals or the one of the plurality of uncorrelated signals based on the correlation mode control signal. The circuit further includes a population count circuit having a plurality of data inputs coupled to receive the outputs of the plurality of selection circuits. The population count circuit provides a population count for the plurality of data inputs. The population count may be an approximate count or an accurate count.

Instructions and logic provide SIMD vector population count functionality. Some embodiments store in each data field of a portion of n data fields of a vector register or memory vector, at least two bits of data. In a processor, a SIMD instruction for a vector population count is executed, such that for that portion of the n data fields in the vector register or memory vector, the occurrences of binary values equal to each of a first one or more predetermined binary values, are counted and the counted occurrences are stored, in a portion of a destination register corresponding to the portion of the n data fields in the vector register or memory vector, as a first one or more counts corresponding to the first one or more predetermined binary values.

The invention discloses an open type scene-oriented entrance and exit population counting method and device. The method comprises the following steps of: arranging a shoeprint collection plate with a camera device at an entrance and exit for acquiring original shoeprint pictures; extracting shoeprints; comparing each shoeprint with shoeprints in a preset time window, if the shoeprint does not exist in the time window, adding 1 to a population counting number in the corresponding direction, storing the shoeprint, and stepping into the next step, otherwise, keeping the population counting number in the corresponding direction unchanged; and comparing each shoeprint with shoeprints stored within a population counting time period, and if the shoeprint does not exist in the population counting time period, adding 1 into the population counting number, otherwise, keeping the population counting number unchanged. The invention is suitable for counting the population at the entrance and exit in the open type scene; the problem of shading of groups can be solved, and the same person can be identified; the population of people getting into and getting out of the entrance and exit can be simultaneously counted; and the environment adaptability is high.