Wiki source code of AI Image Sensor Calibration

Version 99.1 by Karry Zhuang on 2024/04/28 18:02

version	line-number	content
3.1	1
2.1	2
	3
	4
28.1	5
60.1	6	Table of Contents:
2.1	7
60.1	8	{{toc/}}
2.1	9
	10
	11
	12
	13
60.1	14
1.1	15	= 1. Overview =
	16
27.1	17	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.
26.1	18
1.1	19	= 2. Calibrate Digits Readings =
	20
58.2	21
1.1	22	== 2.1 Calibrate a Water Meter ==
	23
	24	=== 2.1.1 Introduce ===
	25
26.1	26	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.
	27
90.2	28	=== 2.1.2 Fix Sensor to a Water Meter ===
1.1	29
90.2	30	The assembly necessitates the use of two screws, two spacers, and this specific device. Additionally, there are AIS Sensors available along with TTL adapters for AIS Sensors.
1.1	31
81.2	32	The fixture below is just a demo, user might adjust it with their water meter. Here is the STEP file for the fixture as below: [[Water Meter Fixture Demo>>https://www.dropbox.com/scl/fo/p1ykgysrv8p454swsh4zj/AHCYr5pcOM0WNad4fT1sf_I?rlkey=7x964q1tuvh0ezbhgxb9b2zqg&st=wxxq87t3&dl=0]].
	33
90.2	34	[[image:image-20240428163842-3.png\|\|height="425" width="609"]] [[image:image-20240428155254-1.png\|\|height="424" width="358"]]
	35
	36	The procedure is as follows:
	37
92.4	38	~1. Secure back of the AIS sensor onto the small board and adjust its position according to your requirements. You may use two additional screws for fixation or utilize 3M double-sided adhesive for attachment.
90.2	39
	40	[[image:image-20240428165320-4.gif]]
	41
	42	2. Proceed by fastening the device using the previously prepared screws and gaskets.
	43
	44	[[image:image-20240428165354-5.gif]]
	45
	46	3. Finally, nestle the device onto your water meter, ensuring that it can be adjusted to meet your specific needs while guaranteeing that the camera is directed towards the digital wheel face.
	47
	48	[[image:image-20240428165412-6.gif]].
	49
92.2	50	The AI Sensors and AUC USB TTL Adapter for AIS Sensors are connected and then connected to the PC.
90.2	51
92.2	52	[[image:image-20240428165634-7.gif]][[image:image-20240428165645-8.jpeg\|\|height="332" width="443"]]
90.2	53
	54
	55
	56
27.1	57	=== 2.1.3 Calibration ===
26.1	58
93.3	59	Launch [[HMX_FT4222H_GUI.exe>>https://www.dropbox.com/scl/fi/yktibns4o33oh0lqitqjl/HIMAX_AMR_PC_Tool.7z?rlkey=94d637ntx152idhw8vij39icv&st=4lsq8xf9&dl=0]]. Please ensure that the firmware upgrade software ota.exe is closed before opening HMX_FT4222H_GUI.exe.
26.1	60
58.3	61	Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
56.5	62
26.1	63	(% class="box warningmessage" %)
	64	(((
79.2	65	(% 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>>https://www.dropbox.com/scl/fi/mzqx6ld5a4zkcecntqjjg/VisualCppRedist_AIO_x86_x64_v42.rar?rlkey=9fuzodmed1fg9ulquh22h0dtr&st=ph6ozi4d&dl=0]] configuration environment. Otherwise, an error pop-up window occurs when running software.
26.1	66	)))
	67
45.3	68	(% 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" %)
26.1	69
27.1	70	Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
26.1	71
45.3	72	(% 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" %)
26.1	73
27.1	74	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.
26.1	75
45.3	76	(% 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" %)
26.1	77
45.3	78	(% 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" %)
26.1	79
27.1	80	This water meter has only five fields, and the coordinates of the digital roulette wheel are shown in the figure.
26.1	81
27.1	82	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.
26.1	83
45.3	84	(% 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" %)
26.1	85
56.3	86	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.
26.1	87
45.3	88	(% 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" %)
26.1	89
27.1	90	Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
29.1	91
27.1	92	The "Long dial" option is the long hand dial.
29.1	93
27.1	94	The "Short dial" option is the short pointer and digital wheel dial.
29.1	95
27.1	96	The "Digit wheel" option is the digital wheel dial.
29.1	97
27.1	98	Now we are calibrating the digital wheel face of the water meter. Here we select "digit wheel".
26.1	99
45.3	100	(% 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" %)
26.1	101
29.1	102	1:Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
26.1	103
45.2	104	2: Fill in the number of number wheel on their dial,fi;
26.1	105
27.1	106	3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
26.1	107
27.1	108	4: Preview whether the setting of their coordinates is accurate;
26.1	109
27.1	110	5: Click to write all configuration to AIS;
26.1	111
27.1	112	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.
26.1	113
45.3	114	(% 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" %)
26.1	115
27.1	116	The effect can be previewed by clicking the "Preview correction" button as shown below.
26.1	117
27.1	118	(% 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" %)
26.1	119
	120
27.1	121	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.
26.1	122
45.2	123	(% aria-label="1713577072196-132.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577072196-132.png\|\|data-widget="image" height="751" width="1073"]]
26.1	124
45.2	125	(% title="Click and drag to resize" %)
	126
58.4	127	== 2.2 Calibration Power Meter ==
26.1	128
30.1	129	=== 2.2.1 Introduce ===
	130
39.2	131	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.
30.1	132
96.1	133	=== 2.2.2 Fix Sensor to a Power Meter(% title="Click and drag to resize" %)(%%) ===
30.1	134
93.2	135	You can utilize a couple of pea clips or other suitable fixtures to securely fasten the AIS sensor and ensure precise alignment of the camera with the digital watch wheel.
30.1	136
97.2	137	[[image:image-20240428180114-11.png\|\|height="705" width="536"]]
30.1	138
	139	=== 2.2.3 Calibration ===
	140
	141	Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
	142
58.3	143	Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
56.5	144
30.1	145	(% class="box warningmessage" %)
	146	(((
	147	(% 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.
	148	)))
	149
45.2	150	(% 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" %)
30.1	151
	152	Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
	153
49.2	154	(% 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"]]
39.2	155
41.2	156	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.
39.2	157
41.2	158	[[image:1713592384928-500.png\|\|height="494" width="266"]][[image:image-20240420141955-4.png\|\|height="492" width="782"]]
39.2	159
41.2	160	This power meter has only six fields, and the coordinates of the digital roulette wheel are shown in the figure.
39.2	161
41.2	162	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.
39.2	163
41.2	164	(% 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"]]
39.2	165
56.3	166	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.
41.2	167
51.2	168	[[image:image-20240420153316-11.png\|\|height="569" width="755"]]
39.2	169
41.3	170	(% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
	171
	172	The "Long dial" option is the long hand dial.
	173
	174	The "Short dial" option is the short pointer and digital wheel dial.
	175
	176	The "Digit wheel" option is the digital wheel dial.
	177
	178	Now we are calibrating the digital wheel face of the power meter. Here we select "digit wheel".
	179
45.3	180	(% 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" %)
41.3	181
	182	1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
	183
45.2	184	2: Fill in the number of number wheel on their dial,six;
41.3	185
	186	3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
	187
	188	4: Preview whether the setting of their coordinates is accurate;
	189
	190	5: Click to write all configuration to AIS;
	191
	192	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.
	193
45.2	194	[[image:image-20240420143939-6.png\|\|height="408" width="886"]](% title="Click and drag to resize" %)
41.3	195
	196	The effect can be previewed by clicking the "Preview correction" button as shown below.
	197
45.2	198	[[image:image-20240420144154-7.png\|\|height="534" width="880"]]
41.3	199
45.2	200	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.
41.3	201
45.2	202	[[image:1713595371004-125.png]]
41.3	203
	204
58.4	205	== 2.3 Calibration Gas Meter ==
26.1	206
47.2	207	=== 2.3.1 Introduce ===
45.4	208
47.2	209	This gas meter uses G2.5 membrane gas meter. It features eight dial numbers for measurement accuracy.
45.4	210
47.2	211	=== 2.3.2 Fix Sensor to a Gas Meter ===
45.4	212
96.1	213	You can utilize a couple of pea clips or other suitable fixtures to securely fasten the AIS sensor and ensure precise alignment of the camera with the digital watch wheel.
45.4	214
99.1	215	[[image:image-20240428180208-12.png\|\|height="599" width="449"]]
45.4	216
99.1	217
62.1	218	=== 2.3.3 Calibration ===
47.2	219
	220	Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
	221
58.3	222	Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
56.5	223
47.2	224	(% class="box warningmessage" %)
	225	(((
	226	(% 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.
	227	)))
	228
	229	(% 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" %)
	230
	231	Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
	232
49.2	233	(% 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]]
47.2	234
49.2	235	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.
47.2	236
49.2	237	[[image:1713592384928-500.png\|\|height="494" width="266"]][[image:1713598094208-496.png\|\|height="494" width="790"]]
47.2	238
56.4	239	This gas meter has eight fields, and the coordinates of the digital roulette wheel are shown in the figure.
47.2	240
49.2	241	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.
47.2	242
49.2	243	(% 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"]]
47.2	244
56.3	245	(% 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.
47.2	246
50.2	247	[[image:image-20240420153139-10.png\|\|height="530" width="710"]]
49.2	248
50.2	249	(% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
49.2	250
50.2	251	The "Long dial" option is the long hand dial.
49.2	252
50.2	253	The "Short dial" option is the short pointer and digital wheel dial.
	254
	255	The "Digit wheel" option is the digital wheel dial.
	256
56.4	257	Now we are calibrating the digital wheel face of the gas meter. Here we select "digit wheel".
50.2	258
	259	(% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png\|\|data-widget="image"]]
	260
54.2	261	1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
50.2	262
54.2	263	2: Fill in the number of number wheel on their dial,eight;
50.2	264
54.2	265	3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
50.2	266
54.2	267	4: Preview whether the setting of their coordinates is accurate;
	268
	269	5: Click to write all configuration to AIS;
	270
	271	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.
	272
	273	[[image:image-20240420154023-12.png\|\|height="436" width="942"]](% title="Click and drag to resize" %)
	274
	275	The effect can be previewed by clicking the "Preview correction" button as shown below.
	276
	277	[[image:1713598855240-454.png]]
	278
	279	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.
	280
	281
27.1	282	== 2.4 Digital wheel dial take point coordinate diagram ==
26.1	283
27.1	284	4 numbers：
26.1	285
27.1	286	(% 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" %)
26.1	287
27.1	288	5 numbers：
26.1	289
27.1	290	(% 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" %)
26.1	291
27.1	292	6 numbers：
26.1	293
27.1	294	(% 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" %)
26.1	295
27.1	296	7 numbers：
26.1	297
27.1	298	(% 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" %)
26.1	299
27.1	300	8 numbers：
26.1	301
27.1	302	(% 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" %)
82.1	303
	304
	305	= (% title="Click and drag to resize" %)3. Get Sensor Data.(%%) =
	306
	307	== (% title="Click and drag to resize" %)3.1 Get Digital Reading After Calibration(%%) ==
	308
	309
	310	== (% title="Click and drag to resize" %)3.2 Get Image and show in PC(%%) ==
	311

Wiki source code of AI Image Sensor Calibration

Applications

Navigation