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Wiki source code of AI Image Sensor Calibration

Version 59.1 by Karry Zhuang on 2024/04/20 17:30
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12 = 1. Overview =
13
14 AIS is a video photo recognition sensor, the sensor can be used in electricity meters, gas meters, water meters, pressure gauges and other types of meters. Accurately identify the number of the current dial or upload the picture of the current dial for comparison, which can replace people to go to the door to read the meter, and is more accurate and energy-saving than the meter. The first thing to do is to fix the AIS sensor, the end direction needs to be aligned with the object that needs to be identified, you can check whether the object all appears in the lens range through the upper computer, and then calibrate, Chapter 2 will explain the calibration method of different tables. 
15
16 = 2. Calibrate Digits Readings =
17
18
19 The data cable should be connected to the AIS (note: there is no camera on this side), while the computer should be connected on the other side.
20
21 [[image:image-20240420164123-15.jpeg]] [[image:image-20240420164123-16.jpeg]]
22
23 == 2.1 Calibrate a Water Meter ==
24
25 === 2.1.1 Introduce ===
26
27 This water meter is designed in accordance with the Chinese standard for drinking cold water meters and hot water meters, GB/T 778.1-2007. It features five dial numbers for measurement accuracy.
28
29 === 2.1.2 Fix Sensor to a Water Meter ===
30
31 Do the following with EVB_Board
32 Debug Board SW12=[off on] : FT4222H SPI Slave mode
33 AIoT Board SW123456=[off off off off off off]
34
35 (% aria-label="image-20240419174248-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174248-4.png||data-widget="image" height="419" width="419"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(%%) (% aria-label="image-20240419174159-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174159-3.png||data-widget="image" height="420" width="556"]](% title="Click and drag to resize" %)​
36
37 Use a hot glue gun and several sticks to attach a triangle for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the water meter.
38
39 [[image:image-20240420154605-14.jpeg||height="903" width="903"]](% title="Click and drag to resize" %)​
40
41
42 === 2.1.3 Calibration ===
43
44 Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
45
46 Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
47
48 (% class="box warningmessage" %)
49 (((
50 (% class="mark" %)Note: before you start the software (%%)HMX_FT4222H_GUI.exe(% class="mark" %). you must pre-install the visualcppredist_aio_x6_x64_v42.exe configuration environment. Otherwise, an error pop-up window occurs when running software.
51 )))
52
53 (% aria-label="1713519971789-213.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713519971789-213.png||data-widget="image"]](% title="Click and drag to resize" %)​
54
55 Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
56
57 (% aria-label="image-20240419174908-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174908-5.png||data-widget="image" height="491" width="406"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(% aria-label="image-20240419175103-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175103-7.png||data-widget="image" height="489" width="632"]](% title="Click and drag to resize" %)​
58
59 Click "enable Raw" and save the BMP image in the "Save" folder. This step is necessary to obtain the coordinate points of the watch face.
60
61 (% aria-label="image-20240419175324-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175324-8.png||data-widget="image" height="637" width="911"]](% title="Click and drag to resize" %)​
62
63 (% aria-label="image-20240419175324-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175324-9.png||data-widget="image" height="348" width="913"]](% title="Click and drag to resize" %)​
64
65 This water meter has only five fields, and the coordinates of the digital roulette wheel are shown in the figure.
66
67 If your device's digital scroll wheel dial does not match these five fields, you can try the other field dial coordinate dot plots in 2.4.
68
69 (% aria-label="1713573839396-314.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713573839396-314.png||data-widget="image" height="198" width="649"]](% title="Click and drag to resize" %)​
70
71 The computer's drawing tool can be used to open the latest bmp image and get the coordinates of the digital wheel dial, as shown below. Based on the format of the digital wheel dial, we can obtain each coordinate point of the current use dial. The (x,y) coordinate on the image is located at the bottom left corner.
72
73 (% aria-label="1713574859715-722.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713574859715-722.png||data-widget="image" height="481" width="576"]](% title="Click and drag to resize" %)​
74
75 Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
76
77 The "Long dial" option is the long hand dial.
78
79 The "Short dial" option is the short pointer and digital wheel dial.
80
81 The "Digit wheel" option is the digital wheel dial.
82
83 Now we are calibrating the digital wheel face of the water meter. Here we select "digit wheel".
84
85 (% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png||data-widget="image"]](% title="Click and drag to resize" %)​
86
87 1:Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
88
89 2: Fill in the number of number wheel on their dial,fi;
90
91 3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
92
93 4: Preview whether the setting of their coordinates is accurate;
94
95 5: Click to write all configuration to AIS;
96
97 6: Click the exit configuration interface, at this time, there will be a readout. If the Reading of "reading" is consistent with the watch face, the calibration is successful. The AIS cannot move thereafter to avoid misreading.
98
99 (% aria-label="1713576930301-479.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576930301-479.png||data-widget="image"]](% title="Click and drag to resize" %)​
100
101 The effect can be previewed by clicking the "Preview correction" button as shown below.
102
103 (% aria-label="1713577029535-253.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577029535-253.png||data-widget="image" height="748" width="1069"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
104
105
106 After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.
107
108 (% aria-label="1713577072196-132.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577072196-132.png||data-widget="image" height="751" width="1073"]]
109
110 (% title="Click and drag to resize" %)​
111
112 == 2.2 Calibration Power Meter ==
113
114 === 2.2.1 Introduce ===
115
116 This power meter is designed in accordance with the Chinese standard for Electricity metering equipment, GB/T 17215.321-2008. It features six dial numbers for measurement accuracy.
117
118 === 2.2.2 Fix Sensor to a Power Meter ===
119
120 Do the following with EVB_Board
121 Debug Board SW12=[off on] : FT4222H SPI Slave mode
122 AIoT Board SW123456=[off off off off off off]
123
124 (% aria-label="image-20240419174248-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174248-4.png||data-widget="image" height="419" width="419"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(%%) (% aria-label="image-20240419174159-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174159-3.png||data-widget="image" height="420" width="556"]](% title="Click and drag to resize" %)​
125
126 Use a hot glue gun and several sticks to attach a triangle for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the power meter.
127
128 [[image:image-20240420134742-1.jpeg||height="909" width="909"]](% title="Click and drag to resize" %)​
129
130
131 === 2.2.3 Calibration ===
132
133 Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
134
135 Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
136
137 (% class="box warningmessage" %)
138 (((
139 (% class="mark" %)Note: before you start the software (%%)HMX_FT4222H_GUI.exe(% class="mark" %). you must pre-install the visualcppredist_aio_x6_x64_v42.exe configuration environment. Otherwise, an error pop-up window occurs when running software.
140 )))
141
142 (% aria-label="1713519971789-213.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713519971789-213.png||data-widget="image"]](% title="Click and drag to resize" %)​
143
144 Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
145
146 (% aria-label="image-20240419174908-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174908-5.png||data-widget="image" height="491" width="406"]][[image:image-20240420135207-3.png||height="485" width="706"]]
147
148 Click "enable Raw" and save the BMP image in the "Save" folder. This step is necessary to obtain the coordinate points of the watch face.
149
150 [[image:1713592384928-500.png||height="494" width="266"]][[image:image-20240420141955-4.png||height="492" width="782"]]
151
152 This power meter has only six fields, and the coordinates of the digital roulette wheel are shown in the figure.
153
154 If your device's digital scroll wheel dial does not match these six fields, you can try the other field dial coordinate dot plots in 2.4.
155
156 (% aria-label="image-20240420094632-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-13.png||data-widget="image" height="148" width="588"]]
157
158 The computer's drawing tool can be used to open the latest bmp image and get the coordinates of the digital wheel dial, as shown below. Based on the format of the digital wheel dial, we can obtain each coordinate point of the current use dial. The (x,y) coordinate on the image is located at the bottom left corner.
159
160 [[image:image-20240420153316-11.png||height="569" width="755"]]
161
162 (% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
163
164 The "Long dial" option is the long hand dial.
165
166 The "Short dial" option is the short pointer and digital wheel dial.
167
168 The "Digit wheel" option is the digital wheel dial.
169
170 Now we are calibrating the digital wheel face of the power meter. Here we select "digit wheel".
171
172 (% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png||data-widget="image"]](% title="Click and drag to resize" %)​
173
174 1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
175
176 2: Fill in the number of number wheel on their dial,six;
177
178 3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
179
180 4: Preview whether the setting of their coordinates is accurate;
181
182 5: Click to write all configuration to AIS;
183
184 6: Click the exit configuration interface, at this time, there will be a readout. If the Reading of "reading" is consistent with the watch face, the calibration is successful. The AIS cannot move thereafter to avoid misreading.
185
186 [[image:image-20240420143939-6.png||height="408" width="886"]](% title="Click and drag to resize" %)​
187
188 The effect can be previewed by clicking the "Preview correction" button as shown below.
189
190 [[image:image-20240420144154-7.png||height="534" width="880"]]
191
192 After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.
193
194 [[image:1713595371004-125.png]]
195
196
197 == 2.3 Calibration Gas Meter ==
198
199 === 2.3.1 Introduce ===
200
201 This gas meter uses G2.5 membrane gas meter. It features eight dial numbers for measurement accuracy.
202
203 === 2.3.2 Fix Sensor to a Gas Meter ===
204
205 Do the following with EVB_Board
206 Debug Board SW12=[off on] : FT4222H SPI Slave mode
207 AIoT Board SW123456=[off off off off off off]
208
209 (% aria-label="image-20240419174248-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174248-4.png||data-widget="image" height="419" width="419"]](% style="background-image: url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background: rgba(220, 220, 220, 0.5); display: none; background-image: url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background: rgba(220, 220, 220, 0.5); display: none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​(%%) (% aria-label="image-20240419174159-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174159-3.png||data-widget="image" height="420" width="556"]](% title="Click and drag to resize" %)​
210
211 Use a hot glue gun and several sticks to attach  for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the gas meter.
212
213 [[image:image-20240420152258-9.jpeg||height="931" width="698"]]
214
215 (% title="Click and drag to resize" %)​
216
217 === 2.1.3 Calibration ===
218
219 Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
220
221 Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
222
223 (% class="box warningmessage" %)
224 (((
225 (% class="mark" %)Note: before you start the software (%%)HMX_FT4222H_GUI.exe(% class="mark" %). you must pre-install the visualcppredist_aio_x6_x64_v42.exe configuration environment. Otherwise, an error pop-up window occurs when running software.
226 )))
227
228 (% aria-label="1713519971789-213.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713519971789-213.png||data-widget="image"]](% title="Click and drag to resize" %)​
229
230 Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
231
232 (% aria-label="image-20240419174908-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174908-5.png||data-widget="image" height="491" width="406"]][[image:1713598021017-402.png]]
233
234 Click "enable Raw" and save the BMP image in the "Save" folder. This step is necessary to obtain the coordinate points of the watch face.
235
236 [[image:1713592384928-500.png||height="494" width="266"]][[image:1713598094208-496.png||height="494" width="790"]]
237
238 This gas meter has eight fields, and the coordinates of the digital roulette wheel are shown in the figure.
239
240 If your device's digital scroll wheel dial does not match these eight fields, you can try the other field dial coordinate dot plots in 2.4.
241
242 (% aria-label="image-20240420094632-15.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-15.png||data-widget="image" height="113" width="542"]]
243
244 (% id="cke_bm_196694S" style="display:none" %) (%%)The computer's drawing tool can be used to open the latest bmp image and get the coordinates of the digital wheel dial, as shown below. Based on the format of the digital wheel dial, we can obtain each coordinate point of the current use dial. The (x,y) coordinate on the image is located at the bottom left corner.
245
246 [[image:image-20240420153139-10.png||height="530" width="710"]]
247
248 (% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
249
250 The "Long dial" option is the long hand dial.
251
252 The "Short dial" option is the short pointer and digital wheel dial.
253
254 The "Digit wheel" option is the digital wheel dial.
255
256 Now we are calibrating the digital wheel face of the gas meter. Here we select "digit wheel".
257
258 (% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png||data-widget="image"]]
259
260 1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
261
262 2: Fill in the number of number wheel on their dial,eight;
263
264 3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
265
266 4: Preview whether the setting of their coordinates is accurate;
267
268 5: Click to write all configuration to AIS;
269
270 6: Click the exit configuration interface, at this time, there will be a readout. If the Reading of "reading" is consistent with the watch face, the calibration is successful. The AIS cannot move thereafter to avoid misreading.
271
272 [[image:image-20240420154023-12.png||height="436" width="942"]](% title="Click and drag to resize" %)​
273
274 The effect can be previewed by clicking the "Preview correction" button as shown below.
275
276 [[image:1713598855240-454.png]]
277
278 After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.
279
280
281 == 2.4 Digital wheel dial take point coordinate diagram ==
282
283 4  numbers：
284
285 (% aria-label="image-20240420094632-11.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-11.png||data-widget="image" height="134" width="410"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
286
287 5 numbers：
288
289 (% aria-label="image-20240420094632-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-12.png||data-widget="image" height="130" width="427"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
290
291 6 numbers：
292
293 (% aria-label="image-20240420094632-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-13.png||data-widget="image" height="112" width="444"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
294
295 7 numbers：
296
297 (% aria-label="image-20240420094632-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-14.png||data-widget="image" height="111" width="454"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​
298
299 8 numbers：
300
301 (% aria-label="image-20240420094632-15.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-15.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)​