如何利用准则实现校准图像质量评测？
2021-06-02 06:25
so I always have to do this by hand.What would be really useful would be to have a ruler
2018-12-10 16:28
;rep_ucshape.il"E- *Error* load: can't access file - "ruler.il"E- *Error* load: can't access
2020-06-16 13:46
你好。在MWC 2018上，ST展示了带有RGB摄像头和VL53L1x的演示，在实时图像上有多个测量点。本周我得到了评估板，这个设备的在线数据表和API手册没有足够的细节如何为多个ROI操作这个配置，我尝试使用示例代码来解决这个问题，但结果确实有意义，距离测量似乎是正确的，但即使我只覆盖传感器的一半，它在光圈内的所有像素上都是相似的。有人成功操作ROI来感测光圈内特定像素的距离吗？ 我为多个ROI开发了一个小测试应用程序，这里我覆盖了传感器的一半，因为你可以看到所有像素返回相同的结果： 谢谢，伊塔马尔以上来自于谷歌翻译以下为原文 Hi.At the MWC 2018, ST presented a demo with RGB camera and the VL53L1x with multiple measurement points on the live image. I got the evaluation boards this week, the datasheet and API manuals online for this device don’t have enough details how to operate this configuration for multiple ROI, I tried to work through this using the example code but the results does make any sense, the distance measurement seems to be correct but it’s similar on all of the pixels within the aperture even when I cover just half of the sensor.Did someone succeed operating the ROI to sense the distance in specific pixel within the aperture? I've developed a small test app for the multiple ROI, here i'm covering half of the sensor, as you can see all pixels returns around the same result: Thanks,Itamar
2018-10-22 16:23
&表示设置为默认值:set showmode显示当前的模式:set compatible?查看当前是否为兼容模式:set number显示行号:set ruler在屏幕右下角显示光标位置
2014-09-10 10:38
空间感知能力是什么意思？U1芯片到底能做什么？UWB超宽带技术又是什么黑科技？UWB技术和我们现在常用的定位技术，又有什么不同呢？
2021-06-16 06:25
我正在尝试制作一个PID控制器，我需要两个中断，一个用于检测AC电流交叉为零（第一个图像），另一个用于使用Time0计数时间，以便能够应用我的PID算法（第二个图像）。问题是，我只能执行一个或另一个，而不是。同时，这取决于我如何选择优先权。基本代码是下一个：如何执行这两个中断？帮助 以上来自于百度翻译 以下为原文 I am trying to make a PID controller, I need two interrupts, one for detecting the AC current crossing for zero (First image), and the other for counting the time using the Timer0 in order to able to apply my PID algorithm (Second image). The problem is that I can only execute one or the other, not both at the same time, and that depends of how I choose the priority. The basic code is the next:#include #include #include ///////////////////////////////////////////////////////////////////////////////////////// CONFIGURATION BITS. Search for the PIC18F4550 in the help documentation (F1) //////// to understand how to configure the MCU ///////////////////////////////////////////////////////////////////////////////////////////#pragma config PLLDIV = 5, CPUDIV = OSC1_PLL2, USBDIV = 2 #pragma config FOSC = HSPLL_HS, FCMEN = OFF, IESO = OFF#pragma config PWRT = OFF, BOR = OFF, VREGEN = OFF#pragma config WDT = OFF, WDTPS = 32768#pragma config MCLRE = ON, LPT1OSC = OFF, PBADEN = OFF#pragma config STVREN = ON, LVP = OFF, ICPRT = OFF, XINST = OFF#define _XTAL_FREQ 48000000 ///////////////////////////////////////////////////////////////////////////////////// /// INTERRUPTS PROGRAMMING ////////////////////////////////////////////////////////// /////////////////////////////////////////////////////////////////////////////////////int i = 0;//void SetupClock(void);bit flag; //Declare the Flag bitint time = 150; // Time it takes to send the trigger voltage (Time*0.01 ms)unsigned char Timer0Config; int main() { PORTB = 0x00; LATB = 0x00; TRISB = 0xD9; // RB7-1 RB6-1 RB5-0 RB4-1 RB3-1 RB2-0 RB1-0 RB0-1 ( 1 = Input, 0 = Output) ////// OPTOTRIAC INTERRUPT INITIATION //////////////////////////////////////////// //TRISBbits.RB0 = 0; //set RB4 as output INTCONbits.INT0E = 1; //enable Interrupt 0 (RB0 as interrupt) INTCON2bits.INTEDG0 = 1; //cause interrupt at falling edge INTCONbits.INT0F = 0; //reset interrupt flag ei(); // This is like fliping the master switch to enable interrupt flag = 0; // Flag Variable initialization ////// TIMER INTERRUPTS INITIATION /////////////////////////////////////////////// TRISAbits.RA4 = 0; //set RB4 as output LATA4 = 0; //Make RB4 high when the program starts Timer0Config = TIMER_INT_ON & T0_16BIT & T0_SOURCE_INT & T0_PS_1_1 ; // Timer0 configuration OpenTimer0(Timer0Config); WriteTimer0(0x1); //Please use HEX. Decimal don't work //WriteTimer0(0xE17B); INTCONbits.TMR0IF = 0; //reset Interrupt Flag ei(); // This is like fliping the master switch to enable interrupt while(1) { }}void interrupt high_priority CheckButtonPressed(){ if(INTCONbits.INT0F == 1) //Checks Receive Interrupt Flag bit{for (int count=0; count
2019-04-12 08:46
你好，我想使用两个BCM943907WCD2设备，一个是服务器（或网关），另一个是客户端。AP在WICEDYSTARTHODHCPYServer（）中无法启动DHCP服务，因为我将接口定义为WieDeE.EnthNET-Butter。如何获得正确的配置来运行BCM943907WCD2平台作为具有DHCP功能的以太网服务器？有人能帮忙吗？ 以上来自于百度翻译 以下为原文Hi, I want to use twoBCM943907WCD2devices and one is server(or gateway) ,the other is client.The AP fails to start DHCP service at wiced_start_dhcp_server() because I define the interface as WICED_ETHERNET_INTERFACE . How can I get the right configuration to run a BCM943907WCD2platform as an ethernet server with DHCP function? Could anyone help?
2018-12-03 11:44
简介模拟衰减器在射频以及微波网络方面得到了很广泛的应用。无论是采用砷化镓微波集成电路（GaAs MMICs）还是采用PIN管的网络，它们都是通过电压来控制射频信号的功率的。在商业应用中，比如蜂窝电话网，个人通信网络，无线局域网以及便携式无线电等，衰减器的造价是设计中的一个重要因素。本文描述了一种利用塑胶封装的表面贴片设计的低造价、宽频带的PIN管Pi型衰减器。
2019-07-09 07:03
我正在尝试仅使用开路，短路和负载校准套件进行2端口测量。我有一个适配器将电缆的两端连接在一起（因为它们是相同的性别）用于直通测量，但没有关于它的细节。手册中说明直通适配器的延迟值可以通过进行单端口校准来确定，然后通过自由端的短路将直通连接到电缆。它按“格式”然后按“延迟”显示延迟格式的跟踪，由此得到延迟值，除以2然后减去短延迟值。我的问题是，当查看延迟屏幕时，我不知道该采取什么作为延迟的值。我在哪个部分测量？它只是在1-6GHz的范围内看起来是一个不平衡的半椭圆形。我应该测量更大的范围吗？一个更简单的解决方案是购买具有适当性别的新连接器和电缆，以便直接连接电缆，但在我这样做之前，并等待他们的到来，我想看看我在这里缺少什么。 以上来自于谷歌翻译 以下为原文I am trying to do 2 port measurements with only an open, short and load calibration kit. I have an adapter to connect the two ends of cable together (as they are same sex) for the thru measurement but no details about it. The manual says the delay value of the thru adapter can be determined by doing a one port calibration then connecting the thru to the cable with the short at the free end. It says press 'Format' then 'Delay' which shows the trace in delay format, from this you get the delay value, divide by two then subtract the short delay value. My problem is that when viewing the Delay screen I do not know what to take as the value for the delay. Which parts of the trace do I measure between? It just looks a lopsided half oval within the range 1-6GHz. Should I measure over a greaterrange? An easier solution would be to buy new connectors and cables with the appropriate sex so as to connect the cable directly for the thru but before I do that and and to await their arrival I wanted to see what I'm missing here.
2019-05-17 13:02
