Real-time histogram statistic system
A statistical histogram and histogram statistics technology, applied in the field of image processing, can solve the problems of complex operation, slow operation speed, slow processing speed, etc., and achieve the effect of simple operation, fast speed, and low consumption of resources.
Inactive Publication Date: 2014-03-26
深圳市凤浴科技有限公司
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[0006] At present, the implementation method is complex in calculation, consumes a lot of resources, and the calculation speed is slow, which cannot achieve the effect of real-time statistics
The current histogram statistics are mainly based on DSP, and DSP is used to realize histogram statistics. Because DSPs are mostly based on serial instruction sets, the processing speed is slow, and DSPs based on parallel instruction sets are expensive, and the degree of parallel processing cannot reach that based on certain Optimization for a specific functional requirement
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[0028] Refer to the attached figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 To illustrate preferred embodiments of the present invention, the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention.
[0029] The capacitive acquisition unit of the capacitive acquisition array converts the measured signal quantity into a voltage signal or a current signal through capacitor discharge, and samples the voltage signal or current signal according to a certain time period T, and sends the sampled voltage or current value to the comparison The comparator converts the voltage signal or current signal into a binary sequence of 0 or 1.
[0030] The capacitive acquisition array includes a plurality of capacitive acquisition units. Each capacitive acquisition unit is in one-to-one correspondence with image pixels, and each capacitive acquisition unit corresponds to a 0 or 1 binary sequence, and a r...
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The invention provides a real-time histogram statistic system which comprises a capacitive collection array, a histogram statistic module, an RAM (random access memory) address generation module, a threshold value point generation module, an RAM selection module and an RAM, wherein the histogram statistic module is used for conducting histogram statistic according to a 0 or 1 two-value sequence generated by the capacitive collection array to obtain a histogram accumulation result of a frame image, and the threshold value point generation module is used for obtaining a lower limit threshold point L, a middle limit threshold point M, an upper limit threshold point H, an upper limit value C1 in a first statistical interval and an upper limit C2 in a second statistical interval within a preset rule according to the histogram accumulation result. The histogram statistic is conducted within 1-5 clock periods after the image sequence is collected, the operation is simple, the consumed resource is less, the speed is high, and compared with the conventional histogram statistics, the real-time histogram statistic system provided by the invention is more adaptable to the market requirements.
Description
technical field [0001] The invention belongs to the technical field of image processing, in particular to a system for real-time statistical histogram Background technique [0002] The existing capacitive image acquisition array applications include: capacitive scratch sensor, capacitive area sensor, etc. The acquisition principle of this type of sensor is to convert the capacitance change of the capacitive acquisition array caused by the acquisition object into an easy-to-handle 0 or 1 binary sequence. [0003] Implementation steps of the existing histogram statistical method: [0004] (1) First convert the 0 or 1 binary sequence collected by the capacitive sensor into an image gray value; [0005] (2) Real-time scanning image data for histogram statistics. [0006] At present, this implementation method is complex in calculation, consumes a lot of resources, and the calculation speed is slow, which cannot achieve the effect of real-time statistics. The current histogra...
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Inventor 田慧
Owner 深圳市凤浴科技有限公司